Ecosyste.ms: Packages
An open API service providing package, version and dependency metadata of many open source software ecosystems and registries.
alpine-v3.13 maintainers: Timo Teräs
Top 7.5% on alpine v3.13
1 version - Latest release: over 2 years ago - 829 stars on GitHub - 1 maintainer
lua-resty-openidc 1.7.5-r0 💰
OpenID Connect library for the nginx lua module1 version - Latest release: over 2 years ago - 829 stars on GitHub - 1 maintainer
Top 9.8% on alpine v3.13
1 version - Latest release: over 1 year ago - 1 maintainer
openssl-doc 1.1.1s-r0
Toolkit for Transport Layer Security (TLS) (documentation)1 version - Latest release: over 1 year ago - 1 maintainer
Top 4.7% on alpine v3.13
2 versions - Latest release: about 1 year ago - 2 dependent packages - 1 maintainer
musl-dbg 1.2.2-r2
the musl c library (libc) implementation (debug symbols)2 versions - Latest release: about 1 year ago - 2 dependent packages - 1 maintainer
Top 3.1% on alpine v3.13
2 versions - Latest release: about 1 year ago - 3 dependent packages - 1 maintainer
musl-dev 1.2.2-r2
the musl c library (libc) implementation (development files)2 versions - Latest release: about 1 year ago - 3 dependent packages - 1 maintainer
Top 0.9% on alpine v3.13
1 version - Latest release: about 4 years ago - 10 dependent packages - 1 maintainer
librevenge 0.0.4-r4
Base library for writing document import filters1 version - Latest release: about 4 years ago - 10 dependent packages - 1 maintainer
Top 6.9% on alpine v3.13
1 version - Latest release: over 3 years ago - 2,968 stars on GitHub - 1 maintainer
bubblewrap-bash-completion 0.4.1-r2
Bash completions for bubblewrap1 version - Latest release: over 3 years ago - 2,968 stars on GitHub - 1 maintainer
Top 6.9% on alpine v3.13
1 version - Latest release: over 3 years ago - 2,968 stars on GitHub - 1 maintainer
bubblewrap-doc 0.4.1-r2
Unprivileged sandboxing tool (documentation)1 version - Latest release: over 3 years ago - 2,968 stars on GitHub - 1 maintainer
Top 4.3% on alpine v3.13
1 version - Latest release: over 3 years ago - 2 dependent packages - 2,968 stars on GitHub - 1 maintainer
bubblewrap 0.4.1-r2
Unprivileged sandboxing tool1 version - Latest release: over 3 years ago - 2 dependent packages - 2,968 stars on GitHub - 1 maintainer
Top 1.0% on alpine v3.13
1 version - Latest release: over 3 years ago - 9 dependent packages - 1 maintainer
libreoffice-common 6.4.6.2-r2
LibreOffice - Common files1 version - Latest release: over 3 years ago - 9 dependent packages - 1 maintainer
Top 10.0% on alpine v3.13
1 version - Latest release: about 4 years ago - 1 dependent package - 8 stars on GitHub - 1 maintainer
lua5.2-maxminddb 0.1-r2
libmaxminddb bindings for Lua 5.21 version - Latest release: about 4 years ago - 1 dependent package - 8 stars on GitHub - 1 maintainer
Top 10.0% on alpine v3.13
1 version - Latest release: about 4 years ago - 1 dependent package - 8 stars on GitHub - 1 maintainer
lua5.1-maxminddb 0.1-r2
libmaxminddb bindings for Lua 5.11 version - Latest release: about 4 years ago - 1 dependent package - 8 stars on GitHub - 1 maintainer
Top 10.0% on alpine v3.13
1 version - Latest release: about 4 years ago - 1 dependent package - 8 stars on GitHub - 1 maintainer
lua5.3-maxminddb 0.1-r2
libmaxminddb bindings for Lua 5.31 version - Latest release: about 4 years ago - 1 dependent package - 8 stars on GitHub - 1 maintainer
lua-maxminddb 0.1-r2
libmaxminddb bindings for Lua1 version - Latest release: about 4 years ago - 8 stars on GitHub - 1 maintainer
Top 1.4% on alpine v3.13
1 version - Latest release: almost 4 years ago - 6 dependent packages - 1 maintainer
pcsc-lite 1.9.0-r0
Middleware to access a smart card using SCard API (PC/SC)1 version - Latest release: almost 4 years ago - 6 dependent packages - 1 maintainer
Top 1.9% on alpine v3.13
1 version - Latest release: about 4 years ago - 4 dependent packages - 1 maintainer
libdvdread 6.1.1-r0
Simple foundation for reading DVD video disks1 version - Latest release: about 4 years ago - 4 dependent packages - 1 maintainer
Top 1.4% on alpine v3.13
1 version - Latest release: almost 4 years ago - 7 dependent packages - 1 maintainer
pcsc-lite-libs 1.9.0-r0
Middleware to access a smart card using SCard API (PC/SC) (libraries)1 version - Latest release: almost 4 years ago - 7 dependent packages - 1 maintainer
lua5.2-ldbus 20150430-r2 💰
Lua D-Bus bindings - for Lua 5.21 version - Latest release: over 4 years ago - 38 stars on GitHub - 1 maintainer
lua5.1-ldbus 20150430-r2 💰
Lua D-Bus bindings - for Lua 5.11 version - Latest release: over 4 years ago - 38 stars on GitHub - 1 maintainer
lua-ldbus 20150430-r2 💰
Lua D-Bus bindings1 version - Latest release: over 4 years ago - 38 stars on GitHub - 1 maintainer
lua5.3-ldbus 20150430-r2 💰
Lua D-Bus bindings - for Lua 5.31 version - Latest release: over 4 years ago - 38 stars on GitHub - 1 maintainer
Top 6.3% on alpine v3.13
1 version - Latest release: over 3 years ago - 2,091 stars on GitHub - 1 maintainer
opensc-bash-completion 0.21.0-r0
Bash completions for opensc1 version - Latest release: over 3 years ago - 2,091 stars on GitHub - 1 maintainer
Top 6.3% on alpine v3.13
1 version - Latest release: over 3 years ago - 2,091 stars on GitHub - 1 maintainer
opensc 0.21.0-r0
Open source smart card tools and middleware1 version - Latest release: over 3 years ago - 2,091 stars on GitHub - 1 maintainer
Top 6.3% on alpine v3.13
1 version - Latest release: over 3 years ago - 2,091 stars on GitHub - 1 maintainer
opensc-doc 0.21.0-r0
Open source smart card tools and middleware (documentation)1 version - Latest release: over 3 years ago - 2,091 stars on GitHub - 1 maintainer
Top 6.9% on alpine v3.13
1 version - Latest release: over 3 years ago - 1 dependent package - 143 stars on GitHub - 1 maintainer
lua-resty-hmac 0.02.20180101-r2
HMAC functions for OpenResty1 version - Latest release: over 3 years ago - 1 dependent package - 143 stars on GitHub - 1 maintainer
Top 7.5% on alpine v3.13
1 version - Latest release: about 3 years ago - 784 stars on GitHub - 1 maintainer
libmaxminddb-static 1.5.0-r1
Maxmind GeoIP2 database library (static library)1 version - Latest release: about 3 years ago - 784 stars on GitHub - 1 maintainer
Top 3.4% on alpine v3.13
1 version - Latest release: about 3 years ago - 5 dependent packages - 784 stars on GitHub - 1 maintainer
libmaxminddb 1.5.0-r1
Maxmind GeoIP2 database library1 version - Latest release: about 3 years ago - 5 dependent packages - 784 stars on GitHub - 1 maintainer
Top 7.5% on alpine v3.13
1 version - Latest release: about 3 years ago - 784 stars on GitHub - 1 maintainer
libmaxminddb-dev 1.5.0-r1
Maxmind GeoIP2 database library (development files)1 version - Latest release: about 3 years ago - 784 stars on GitHub - 1 maintainer
Top 7.5% on alpine v3.13
1 version - Latest release: about 3 years ago - 784 stars on GitHub - 1 maintainer
libmaxminddb-doc 1.5.0-r1
Maxmind GeoIP2 database library (documentation)1 version - Latest release: about 3 years ago - 784 stars on GitHub - 1 maintainer
Top 0.6% on alpine v3.13
1 version - Latest release: over 1 year ago - 15 dependent packages - 1 maintainer
openssl 1.1.1s-r0
Toolkit for Transport Layer Security (TLS)1 version - Latest release: over 1 year ago - 15 dependent packages - 1 maintainer
Top 0.1% on alpine v3.13
1 version - Latest release: over 1 year ago - 509 dependent packages - 1 maintainer
libcrypto1.1 1.1.1s-r0
Crypto library from openssl1 version - Latest release: over 1 year ago - 509 dependent packages - 1 maintainer
Top 0.1% on alpine v3.13
1 version - Latest release: over 1 year ago - 274 dependent packages - 1 maintainer
libssl1.1 1.1.1s-r0
SSL shared libraries1 version - Latest release: over 1 year ago - 274 dependent packages - 1 maintainer
Top 1.4% on alpine v3.13
1 version - Latest release: over 1 year ago - 18 dependent packages - 1 maintainer
openssl-dev 1.1.1s-r0
Toolkit for Transport Layer Security (TLS) (development files)1 version - Latest release: over 1 year ago - 18 dependent packages - 1 maintainer
gdnsd 2.4.0-r2
Geographic Authoritative DNS server1 version - Latest release: about 4 years ago - 9 stars on GitHub - 1 maintainer
gdnsd-doc 2.4.0-r2
Geographic Authoritative DNS server (documentation)1 version - Latest release: about 4 years ago - 9 stars on GitHub - 1 maintainer
gdnsd-dev 2.4.0-r2
Geographic Authoritative DNS server (development files)1 version - Latest release: about 4 years ago - 9 stars on GitHub - 1 maintainer
Top 1.9% on alpine v3.13
1 version - Latest release: about 5 years ago - 4 dependent packages - 1 maintainer
libwpd 0.10.3-r0
Import filter and tools for WordPerfect Documents1 version - Latest release: about 5 years ago - 4 dependent packages - 1 maintainer
Top 1.6% on alpine v3.13
1 version - Latest release: over 3 years ago - 5 dependent packages - 1 maintainer
libbluray 1.2.1-r0
Library for Blu-Ray disc playback1 version - Latest release: over 3 years ago - 5 dependent packages - 1 maintainer
Top 1.9% on alpine v3.13
1 version - Latest release: over 3 years ago - 4 dependent packages - 1 maintainer
ccid 1.4.34-r0
USB CCID/ICCD SmartCard reader driver1 version - Latest release: over 3 years ago - 4 dependent packages - 1 maintainer
libpri 1.6.0-r1
Primary Rate ISDN (PRI) library1 version - Latest release: over 3 years ago - 6 stars on GitHub - 1 maintainer
libpri-dev 1.6.0-r1
Primary Rate ISDN (PRI) library (development files)1 version - Latest release: over 3 years ago - 6 stars on GitHub - 1 maintainer
cmis-client 0.5.2-r2
CMIS protocol client library1 version - Latest release: over 4 years ago - 16 stars on GitHub - 1 maintainer
libcmis-dev 0.5.2-r2
CMIS protocol client library (development files)1 version - Latest release: over 4 years ago - 16 stars on GitHub - 1 maintainer
Top 8.9% on alpine v3.13
1 version - Latest release: over 4 years ago - 2 dependent packages - 16 stars on GitHub - 1 maintainer
libcmis 0.5.2-r2
CMIS protocol client library1 version - Latest release: over 4 years ago - 2 dependent packages - 16 stars on GitHub - 1 maintainer
libcmis-doc 0.5.2-r2
CMIS protocol client library (documentation)1 version - Latest release: over 4 years ago - 16 stars on GitHub - 1 maintainer
lua5.3-cqueues-pushy 0.20180530-r0
Framework for logic control (based on cqueues) - Lua 5.31 version - Latest release: almost 6 years ago - 0 stars on GitHub - 1 maintainer
lua5.2-cqueues-pushy 0.20180530-r0
Framework for logic control (based on cqueues) - Lua 5.21 version - Latest release: almost 6 years ago - 0 stars on GitHub - 1 maintainer
lua-cqueues-pushy 0.20180530-r0
Framework for logic control (based on cqueues)1 version - Latest release: almost 6 years ago - 0 stars on GitHub - 1 maintainer
libixion 0.15.0-r0
A general purpose formula parser & interpreter1 version - Latest release: over 4 years ago - 18 stars on GitLab.com - 1 maintainer
libixion-dev 0.15.0-r0
A general purpose formula parser & interpreter (development files)1 version - Latest release: over 4 years ago - 18 stars on GitLab.com - 1 maintainer
Top 1.2% on alpine v3.13
1 version - Latest release: almost 3 years ago - 7 dependent packages - 1 maintainer
unzip 6.0-r9
Extract PKZIP-compatible .zip files1 version - Latest release: almost 3 years ago - 7 dependent packages - 1 maintainer
lua-soap 3.0-r0
Lua library to ease the use of SOAP1 version - Latest release: over 4 years ago - 54 stars on GitHub - 1 maintainer
mdds-dev 1.6.0-r0
Multi-dimensional data index algorithm (development files)1 version - Latest release: about 4 years ago - 18 stars on GitLab.com - 1 maintainer
mdds 1.6.0-r0
Multi-dimensional data index algorithm1 version - Latest release: about 4 years ago - 18 stars on GitLab.com - 1 maintainer
mdds-doc 1.6.0-r0
Multi-dimensional data index algorithm (documentation)1 version - Latest release: about 4 years ago - 18 stars on GitLab.com - 1 maintainer
Top 6.3% on alpine v3.13
1 version - Latest release: over 3 years ago - 2,091 stars on GitHub - 1 maintainer
opensc-dev 0.21.0-r0
Open source smart card tools and middleware (development files)1 version - Latest release: over 3 years ago - 2,091 stars on GitHub - 1 maintainer
Top 9.8% on alpine v3.13
1 version - Latest release: over 1 year ago - 1 maintainer
openssl-libs-static 1.1.1s-r0
Toolkit for Transport Layer Security (TLS) (static library)1 version - Latest release: over 1 year ago - 1 maintainer
musl 1.2.2-r2
the musl c library (libc) implementation2 versions - Latest release: about 1 year ago - 6,233 dependent packages - 1 maintainer
Top 9.8% on alpine v3.13
2 versions - Latest release: about 1 year ago - 1 maintainer
libc6-compat 1.2.2-r2
compatibility libraries for glibc2 versions - Latest release: about 1 year ago - 1 maintainer
Top 8.9% on alpine v3.13
1 version - Latest release: over 3 years ago - 303 stars on GitHub - 1 maintainer
lua5.1-resty-dns 0.18-r2
DNS resolver for the nginx lua module for Lua 5.11 version - Latest release: over 3 years ago - 303 stars on GitHub - 1 maintainer
Top 9.8% on alpine v3.13
2 versions - Latest release: about 1 year ago - 1 maintainer
musl-libintl 1.2.2-r2
musl libintl.h header2 versions - Latest release: about 1 year ago - 1 maintainer
Top 6.4% on alpine v3.13
1 version - Latest release: about 5 years ago - 1 dependent package - 298 stars on GitHub - 1 maintainer
lua-resty-session 2.23-r0
Session library for OpenResty1 version - Latest release: about 5 years ago - 1 dependent package - 298 stars on GitHub - 1 maintainer
Top 5.9% on alpine v3.13
1 version - Latest release: over 3 years ago - 1 dependent package - 403 stars on GitHub - 1 maintainer
lua-resty-string 0.11-r2
String functions for OpenResty1 version - Latest release: over 3 years ago - 1 dependent package - 403 stars on GitHub - 1 maintainer
Top 9.8% on alpine v3.13
1 version - Latest release: over 1 year ago - 1 maintainer
openssl-dbg 1.1.1s-r0
Toolkit for Transport Layer Security (TLS) (debug symbols)1 version - Latest release: over 1 year ago - 1 maintainer
Top 8.9% on alpine v3.13
1 version - Latest release: over 3 years ago - 303 stars on GitHub - 1 maintainer
lua-resty-dns 0.18-r2
DNS resolver for the nginx lua module1 version - Latest release: over 3 years ago - 303 stars on GitHub - 1 maintainer
Top 4.7% on alpine v3.13
2 versions - Latest release: about 1 year ago - 1 dependent package - 1 maintainer
musl-utils 1.2.2-r2
the musl c library (libc) implementation2 versions - Latest release: about 1 year ago - 1 dependent package - 1 maintainer
Top 9.8% on alpine v3.13
1 version - Latest release: over 3 years ago - 1 maintainer
libreoffice-lang-uk 6.4.6.2-r2
LibreOffice - Ukrainian language pack1 version - Latest release: over 3 years ago - 1 maintainer
Top 9.8% on alpine v3.13
1 version - Latest release: over 3 years ago - 1 maintainer
perl-tree-dag_node 1.31-r2
An N-ary tree1 version - Latest release: over 3 years ago - 1 maintainer
Top 9.2% on alpine v3.13
1 version - Latest release: about 4 years ago - 6 dependent packages - 5 stars on GitHub - 1 maintainer
libstaroffice 0.0.7-r0
Import filter for StarOffice documents1 version - Latest release: about 4 years ago - 6 dependent packages - 5 stars on GitHub - 1 maintainer
Top 9.8% on alpine v3.13
1 version - Latest release: over 5 years ago - 1 maintainer
fastjar-doc 0.98-r3
A fast implementation of Java Archiver (documentation)1 version - Latest release: over 5 years ago - 1 maintainer
Top 9.8% on alpine v3.13
1 version - Latest release: over 3 years ago - 1 maintainer
libetonyek-dev 0.1.9-r4
Import filter and tools for Apple Keynote presentations (development files)1 version - Latest release: over 3 years ago - 1 maintainer
Top 9.8% on alpine v3.13
1 version - Latest release: over 3 years ago - 1 maintainer
libmspub-doc 0.1.4-r7
Import filter and tools for MS Publisher files (documentation)1 version - Latest release: over 3 years ago - 1 maintainer
Top 9.8% on alpine v3.13
1 version - Latest release: over 4 years ago - 1 maintainer
xmlindent 0.2.17-r0
An XML indenting utility1 version - Latest release: over 4 years ago - 1 maintainer
Top 9.8% on alpine v3.13
1 version - Latest release: about 3 years ago - 1 maintainer
openjdk8-jre-lib 8.275.01-r0
OpenJDK 8 Java Runtime (class libraries)1 version - Latest release: about 3 years ago - 1 maintainer
Top 9.8% on alpine v3.13
1 version - Latest release: about 3 years ago - 1 maintainer
openjdk8 8.275.01-r0
OpenJDK 8 provided by IcedTea1 version - Latest release: about 3 years ago - 1 maintainer
Top 9.8% on alpine v3.13
1 version - Latest release: over 3 years ago - 1 maintainer
squark-doc 0.6.1-r3
Squid User Authentication and Rating Kit (documentation)1 version - Latest release: over 3 years ago - 1 maintainer
Top 9.8% on alpine v3.13
1 version - Latest release: over 4 years ago - 1 maintainer
ecryptfs-utils 111-r9
Enterprise-class stacked cryptographic filesystem for Linux1 version - Latest release: over 4 years ago - 1 maintainer
libstaroffice-doc 0.0.7-r0
Import filter for StarOffice documents (documentation)1 version - Latest release: about 4 years ago - 5 stars on GitHub - 1 maintainer
libsmbios-dev 2.4.3-r0
library for interacting with Dell SMBIOS tables (development files)1 version - Latest release: about 4 years ago - 159 stars on GitHub - 1 maintainer
Top 9.8% on alpine v3.13
1 version - Latest release: over 3 years ago - 1 maintainer
perl-term-readkey-doc 2.38-r5
Change terminal modes, and perform non-blocking reads (documentation)1 version - Latest release: over 3 years ago - 1 maintainer
Top 9.8% on alpine v3.13
1 version - Latest release: about 4 years ago - 1 maintainer
libe-book-tools 0.1.3-r8
Import filter and tools for various ebook formats1 version - Latest release: about 4 years ago - 1 maintainer
libsmbios-lang 2.4.3-r0
Languages for package libsmbios1 version - Latest release: about 4 years ago - 159 stars on GitHub - 1 maintainer
Top 9.8% on alpine v3.13
1 version - Latest release: over 4 years ago - 1 maintainer
aaudit-server 0.7.2-r2
Alpine Auditor1 version - Latest release: over 4 years ago - 1 maintainer
Top 4.7% on alpine v3.13
1 version - Latest release: over 3 years ago - 4 dependent packages - 1 maintainer
perl-http-parser-xs 0.17-r4
a fast, primitive HTTP request parser1 version - Latest release: over 3 years ago - 4 dependent packages - 1 maintainer
Top 9.8% on alpine v3.13
1 version - Latest release: about 5 years ago - 1 maintainer
libwpd-tools 0.10.3-r0
Import filter and tools for WordPerfect Documents1 version - Latest release: about 5 years ago - 1 maintainer
Top 9.8% on alpine v3.13
1 version - Latest release: about 4 years ago - 1 maintainer
libfreehand-tools 0.1.2-r4
Import filter and tools for Adobe FreeHand documents1 version - Latest release: about 4 years ago - 1 maintainer
Top 2.3% on alpine v3.13
1 version - Latest release: over 3 years ago - 5 dependent packages - 1 maintainer
libwps 0.4.12-r0
Import filter and tools for Microsoft Works files1 version - Latest release: over 3 years ago - 5 dependent packages - 1 maintainer
Top 4.7% on alpine v3.13
1 version - Latest release: over 3 years ago - 1 dependent package - 1 maintainer
libreoffice-writer 6.4.6.2-r2
LibreOffice - Word Processor1 version - Latest release: over 3 years ago - 1 dependent package - 1 maintainer
Top 9.8% on alpine v3.13
1 version - Latest release: over 3 years ago - 1 maintainer
libreoffice-lang-fr 6.4.6.2-r2
LibreOffice - French language pack1 version - Latest release: over 3 years ago - 1 maintainer
Top 4.7% on alpine v3.13
1 version - Latest release: over 4 years ago - 1 dependent package - 1 maintainer
libodfgen 0.1.7-r1
Import filter and tools for Open Document Format1 version - Latest release: over 4 years ago - 1 dependent package - 1 maintainer
Top 9.8% on alpine v3.13
1 version - Latest release: over 3 years ago - 1 maintainer
perl-sub-quote-doc 2.006006-r1
Efficient generation of subroutines via string eval (documentation)1 version - Latest release: over 3 years ago - 1 maintainer
Top 9.8% on alpine v3.13
1 version - Latest release: over 3 years ago - 1 maintainer
hunspell-pt 20201212-r0
Portuguese hunspell dictionaries1 version - Latest release: over 3 years ago - 1 maintainer
Top 9.8% on alpine v3.13
1 version - Latest release: over 3 years ago - 1 maintainer
libreoffice-gnome 6.4.6.2-r2
LibreOffice - GNOME integration1 version - Latest release: over 3 years ago - 1 maintainer
Top 9.8% on alpine v3.13
1 version - Latest release: over 3 years ago - 1 maintainer
libreoffice-lang-sk 6.4.6.2-r2
LibreOffice - Slovak language pack1 version - Latest release: over 3 years ago - 1 maintainer
libstaroffice-dev 0.0.7-r0
Import filter for StarOffice documents (development files)1 version - Latest release: about 4 years ago - 5 stars on GitHub - 1 maintainer
Top 9.8% on alpine v3.13
1 version - Latest release: over 3 years ago - 1 maintainer
libreoffice-lang-oc 6.4.6.2-r2
LibreOffice - Occitan language pack1 version - Latest release: over 3 years ago - 1 maintainer
Top 9.8% on alpine v3.13
1 version - Latest release: over 3 years ago - 1 maintainer
libreoffice-lang-be 6.4.6.2-r2
LibreOffice - Belarusian language pack1 version - Latest release: over 3 years ago - 1 maintainer
Top 9.8% on alpine v3.13
1 version - Latest release: over 3 years ago - 1 maintainer
libreoffice 6.4.6.2-r2
LibreOffice - Meta package for the full office suite1 version - Latest release: over 3 years ago - 1 maintainer
Top 9.8% on alpine v3.13
1 version - Latest release: over 4 years ago - 1 maintainer
dahdi-linux 3.1.0-r0
Firmware for Digium Asterisk Hardware Device Interface drivers1 version - Latest release: over 4 years ago - 1 maintainer
Top 9.8% on alpine v3.13
1 version - Latest release: over 3 years ago - 1 maintainer
libreoffice-lang-ss 6.4.6.2-r2
LibreOffice - Swati language pack1 version - Latest release: over 3 years ago - 1 maintainer
Top 9.8% on alpine v3.13
1 version - Latest release: about 3 years ago - 1 maintainer
libmatroska 1.6.3-r0
Extensible multimedia container format based on EBML1 version - Latest release: about 3 years ago - 1 maintainer