Ecosyste.ms: Packages
An open API service providing package, version and dependency metadata of many open source software ecosystems and registries.
Top 0.1% on alpine v3.12
Top 0.2% dependent packages on alpine v3.12
Top 0.2% dependent packages on alpine v3.12
alpine v3.12 : freetype
TrueType font rendering library
Registry
-
Source
- JSON
purl: pkg:apk/alpine/freetype?arch=x86_64
License: FTL
Latest release: almost 2 years ago
First release: almost 2 years ago
Namespace: main
Dependent packages: 162
Last synced: 5 days ago
Top 7.3% on alpine edge
12 versions - Latest release: about 12 hours ago - 1 dependent package - 1 maintainer
octave 9.1.0-r2
A high-level language, primarily intended for numerical computations12 versions - Latest release: about 12 hours ago - 1 dependent package - 1 maintainer
Top 7.3% on alpine edge
82 versions - Latest release: about 14 hours ago - 1 maintainer
firefox-developer-edition 126.0_beta9-r0
Firefox web browser82 versions - Latest release: about 14 hours ago - 1 maintainer
Top 0.2% on alpine edge
35 versions - Latest release: 1 day ago - 21 dependent packages - 1 maintainer
qt5-qtwebengine 5.15.16-r8
Qt5 - QtWebEngine components35 versions - Latest release: 1 day ago - 21 dependent packages - 1 maintainer
Top 0.2% on alpine edge
72 versions - Latest release: 1 day ago - 9 dependent packages - 106,434 stars on GitHub - 1 maintainer
electron 30.0.2-r0
Electron cross-platform desktop toolkit72 versions - Latest release: 1 day ago - 9 dependent packages - 106,434 stars on GitHub - 1 maintainer
Top 7.3% on alpine edge
47 versions - Latest release: 3 days ago - 1 maintainer
thunderbird 115.10.2-r0
Thunderbird email client47 versions - Latest release: 3 days ago - 1 maintainer
Top 7.3% on alpine edge
66 versions - Latest release: 5 days ago - 1 maintainer
firefox 125.0.3-r0
Firefox web browser66 versions - Latest release: 5 days ago - 1 maintainer
Top 7.3% on alpine edge
18 versions - Latest release: 5 days ago - 1 maintainer
kodi-wayland 20.5-r3
Wayland Kodi binary18 versions - Latest release: 5 days ago - 1 maintainer
Top 7.3% on alpine edge
18 versions - Latest release: 5 days ago - 1 dependent package - 1 maintainer
kodi-gbm 20.5-r3
GBM Kodi binary18 versions - Latest release: 5 days ago - 1 dependent package - 1 maintainer
Top 7.3% on alpine edge
18 versions - Latest release: 5 days ago - 3 dependent packages - 1 maintainer
kodi-x11 20.5-r3
X11 Kodi binary18 versions - Latest release: 5 days ago - 3 dependent packages - 1 maintainer
openjdk11-jre 11.0.23_p9-r0
Oracle OpenJDK 11 (JRE)6 versions - Latest release: 9 days ago - 106 stars on GitHub - 1 maintainer
openjdk17-jre 17.0.11_p9-r0
Oracle OpenJDK 17 (JRE)6 versions - Latest release: 9 days ago - 3 dependent packages - 54 stars on GitHub - 1 maintainer
thunderbird 115.10.1-r0
Thunderbird email client14 versions - Latest release: 9 days ago - 1 maintainer
Top 7.9% on alpine v3.18
5 versions - Latest release: 10 days ago - 1 dependent package - 57 stars on GitHub - 1 maintainer
openjdk17-jre 17.0.11_p9-r0
Oracle OpenJDK 17 (JRE)5 versions - Latest release: 10 days ago - 1 dependent package - 57 stars on GitHub - 1 maintainer
Top 6.8% on alpine v3.18
5 versions - Latest release: 10 days ago - 1 dependent package - 110 stars on GitHub - 1 maintainer
openjdk11-jre 11.0.23_p9-r0
Oracle OpenJDK 11 (JRE)5 versions - Latest release: 10 days ago - 1 dependent package - 110 stars on GitHub - 1 maintainer
openjdk21-jre 21.0.3_p9-r0
Oracle OpenJDK 21 (JRE)6 versions - Latest release: 10 days ago - 1 dependent package - 22 stars on GitHub - 1 maintainer
Top 9.5% on alpine edge
9 versions - Latest release: 10 days ago - 2 dependent packages - 55 stars on GitHub - 1 maintainer
openjdk17-jre 17.0.11_p9-r0
Oracle OpenJDK 17 (JRE)9 versions - Latest release: 10 days ago - 2 dependent packages - 55 stars on GitHub - 1 maintainer
openjdk11-jre 11.0.23_p9-r0
Oracle OpenJDK 11 (JRE)9 versions - Latest release: 10 days ago - 2 dependent packages - 106 stars on GitHub - 1 maintainer
Top 7.3% on alpine edge
7 versions - Latest release: 12 days ago - 1 dependent package - 1 maintainer
openrct2 0.4.10-r0
Open-source re-implementation of Roller Coaster Tycoon 27 versions - Latest release: 12 days ago - 1 dependent package - 1 maintainer
Top 7.3% on alpine edge
22 versions - Latest release: 12 days ago - 1 maintainer
kwin 6.0.4.1-r0
An easy to use, but flexible, composited Window Manager22 versions - Latest release: 12 days ago - 1 maintainer
Top 7.3% on alpine edge
11 versions - Latest release: 12 days ago - 1 dependent package - 1 maintainer
poppler-qt6 24.02.0-r1
PDF rendering library based on xpdf 3.0 (qt6 component)11 versions - Latest release: 12 days ago - 1 dependent package - 1 maintainer
Top 1.2% on alpine edge
24 versions - Latest release: 13 days ago - 3 dependent packages - 1 maintainer
plasma-workspace-libs 6.0.4-r0
KDE Plasma Workspace (libraries)24 versions - Latest release: 13 days ago - 3 dependent packages - 1 maintainer
Top 7.3% on alpine edge
17 versions - Latest release: 13 days ago - 1 maintainer
libinkscape_base 1.3.2-r6
base libinkscape_base.so to share with inkview17 versions - Latest release: 13 days ago - 1 maintainer
Top 3.0% on alpine edge
8 versions - Latest release: 17 days ago - 1 dependent package - 1 maintainer
texlive-xetex 20240210.69778-r2
TeX typesetting engine supporting modern typography and bidirectional text8 versions - Latest release: 17 days ago - 1 dependent package - 1 maintainer
Top 3.0% on alpine edge
8 versions - Latest release: 17 days ago - 1 dependent package - 1 maintainer
texlive-dvi 20240210.69778-r2
Tools for dvi based workflow (e.g. dvips)8 versions - Latest release: 17 days ago - 1 dependent package - 1 maintainer
Top 7.3% on alpine edge
5 versions - Latest release: 17 days ago - 7 stars on gitlab.xfce.org - 1 maintainer
tumbler 4.18.2-r1
D-Bus thumbnail service5 versions - Latest release: 17 days ago - 7 stars on gitlab.xfce.org - 1 maintainer
Top 0.9% on alpine edge
22 versions - Latest release: 18 days ago - 4 dependent packages - 1 maintainer
okular-common 24.02.2-r0
Common files for okular and okular-mobile22 versions - Latest release: 18 days ago - 4 dependent packages - 1 maintainer
Top 7.3% on alpine edge
34 versions - Latest release: 18 days ago - 1 maintainer
firefox-esr 115.10.0-r0
Firefox web browser - Extended Support Release34 versions - Latest release: 18 days ago - 1 maintainer
Top 0.9% on alpine edge
35 versions - Latest release: 18 days ago - 5 dependent packages - 1 maintainer
qt6-qtwebengine 6.6.3-r2
Provides support for web applications using the Chromium browser project35 versions - Latest release: 18 days ago - 5 dependent packages - 1 maintainer
Top 7.3% on alpine edge
12 versions - Latest release: 20 days ago - 1 dependent package - 1 maintainer
poppler-glib 24.02.0-r1
Glib wrapper for poppler12 versions - Latest release: 20 days ago - 1 dependent package - 1 maintainer
Top 3.0% on alpine edge
12 versions - Latest release: 20 days ago - 14 dependent packages - 1 maintainer
poppler 24.02.0-r1
PDF rendering library based on xpdf 3.012 versions - Latest release: 20 days ago - 14 dependent packages - 1 maintainer
Top 3.0% on alpine edge
12 versions - Latest release: 20 days ago - 2 dependent packages - 1 maintainer
poppler-utils 24.02.0-r1
Poppler's xpdf-workalike command line utilities12 versions - Latest release: 20 days ago - 2 dependent packages - 1 maintainer
Top 1.2% on alpine edge
23 versions - Latest release: 23 days ago - 3 dependent packages - 1 maintainer
openimageio 2.5.10.1-r1
Image I/O library supporting a multitude of image formats23 versions - Latest release: 23 days ago - 3 dependent packages - 1 maintainer
Top 7.3% on alpine edge
9 versions - Latest release: 23 days ago - 1 maintainer
scribus 1.6.1-r0
libre desktop publishing9 versions - Latest release: 23 days ago - 1 maintainer
Top 3.0% on alpine edge
7 versions - Latest release: 23 days ago - 1 dependent package - 1 maintainer
xdvik 20240210.69778-r1
Xdvi from texlive, using the texlive libraries7 versions - Latest release: 23 days ago - 1 dependent package - 1 maintainer
Top 6.6% on alpine edge
19 versions - Latest release: 23 days ago - 1 maintainer
php83-gd 8.3.6-r0
PHP83 extension: GD imaging19 versions - Latest release: 23 days ago - 1 maintainer
Top 0.3% on alpine edge
25 versions - Latest release: 24 days ago - 13 dependent packages - 1 maintainer
webkit2gtk 2.44.1-r0
Portable web rendering engine WebKit for GTK+25 versions - Latest release: 24 days ago - 13 dependent packages - 1 maintainer
Top 7.3% on alpine edge
17 versions - Latest release: 24 days ago - 6 dependent packages - 1 maintainer
webkit2gtk-6.0 2.44.1-r0
Portable web rendering engine WebKit for GTK+ - GTK4 version17 versions - Latest release: 24 days ago - 6 dependent packages - 1 maintainer
Top 3.0% on alpine edge
20 versions - Latest release: 24 days ago - 8 dependent packages - 1 maintainer
webkit2gtk-4.1 2.44.1-r0
Portable web rendering engine WebKit for GTK+ - GTK+3 libsoup3 version20 versions - Latest release: 24 days ago - 8 dependent packages - 1 maintainer
Top 7.3% on alpine edge
34 versions - Latest release: 24 days ago - 22 dependent packages - 1 maintainer
ffmpeg-libavfilter 6.1.1-r6
Complete and free Internet live audio and video broadcasting solution for Linux/Unix (libavfilter...34 versions - Latest release: 24 days ago - 22 dependent packages - 1 maintainer
Top 7.3% on alpine edge
13 versions - Latest release: 24 days ago - 1 maintainer
vlc 3.0.20-r5
Multi-platform MPEG, VCD/DVD, and DivX player13 versions - Latest release: 24 days ago - 1 maintainer
Top 0.7% on alpine edge
27 versions - Latest release: 24 days ago - 5 dependent packages - 1 maintainer
php81-gd 8.1.28-r0
PHP81 extension: GD imaging27 versions - Latest release: 24 days ago - 5 dependent packages - 1 maintainer
Top 7.3% on alpine edge
27 versions - Latest release: 25 days ago - 6 dependent packages - 1 maintainer
php82-gd 8.2.18-r0
PHP82 extension: GD imaging27 versions - Latest release: 25 days ago - 6 dependent packages - 1 maintainer
openjdk8-jre 8.402.06-r0
OpenJDK 8 Java Runtime4 versions - Latest release: 25 days ago - 3 dependent packages - 1 maintainer
Top 7.3% on alpine edge
22 versions - Latest release: about 1 month ago - 4 dependent packages - 1 maintainer
mupdf-libs 1.24.1-r0
Lightweight PDF and XPS viewer (libraries)22 versions - Latest release: about 1 month ago - 4 dependent packages - 1 maintainer
Top 6.2% on alpine edge
8 versions - Latest release: about 1 month ago - 1 dependent package - 1 maintainer
grass-gis 8.3.2-r1
Geographic Resources Analysis Support System8 versions - Latest release: about 1 month ago - 1 dependent package - 1 maintainer
Top 7.3% on alpine edge
22 versions - Latest release: about 1 month ago - 1 maintainer
harfbuzz-utils 8.4.0-r0
Text shaping library (utilities)22 versions - Latest release: about 1 month ago - 1 maintainer
Top 1.2% on alpine edge
23 versions - Latest release: about 1 month ago - 3 dependent packages - 1 maintainer
harfbuzz 8.4.0-r0
Text shaping library23 versions - Latest release: about 1 month ago - 3 dependent packages - 1 maintainer
yofi 0.2.2-r0
A minimalistic menu for wayland4 versions - Latest release: about 1 month ago - 235 stars on GitHub - 1 maintainer
Top 0.1% on alpine edge
19 versions - Latest release: about 1 month ago - 37 dependent packages - 1 maintainer
qt6-qtbase-x11 6.6.3-r0
Qt6 GUI-related libraries19 versions - Latest release: about 1 month ago - 37 dependent packages - 1 maintainer
Top 1.7% on alpine edge
14 versions - Latest release: about 1 month ago - 2 dependent packages - 1 maintainer
openjdk8-jre 8.402.06-r0
OpenJDK 8 Java Runtime14 versions - Latest release: about 1 month ago - 2 dependent packages - 1 maintainer
Top 7.3% on alpine edge
10 versions - Latest release: about 1 month ago - 1 maintainer
jenkins 2.440.2-r0
Extendable continuous integration server (LTS version)10 versions - Latest release: about 1 month ago - 1 maintainer
firefox-esr 115.9.1-r0
Firefox web browser - Extended Support Release13 versions - Latest release: about 1 month ago - 1 maintainer
Top 6.3% on alpine edge
16 versions - Latest release: about 1 month ago - 1 maintainer
flutter-glfw 3.19.4-r0
Cross-platform apps, built in Omelas (GLFW embedder runtime)16 versions - Latest release: about 1 month ago - 1 maintainer
Top 6.3% on alpine edge
16 versions - Latest release: about 1 month ago - 2 dependent packages - 1 maintainer
flutter-gtk 3.19.4-r0
Cross-platform apps, built in Omelas (GTK embedder runtime)16 versions - Latest release: about 1 month ago - 2 dependent packages - 1 maintainer
Top 7.3% on alpine edge
12 versions - Latest release: about 2 months ago - 1 maintainer
lsp-plugins 1.2.15-r0
Collection of free plugins compatible with LADSPA, LV2 and LinuxVST12 versions - Latest release: about 2 months ago - 1 maintainer
fcft 3.1.8-r0
Simple library for font loading and glyph rasterization using FontConfig, FreeType and pixman6 versions - Latest release: 2 months ago - 2 dependent packages - 27 stars on Codeberg.org - 1 maintainer
Top 1.7% on alpine edge
14 versions - Latest release: 2 months ago - 3 dependent packages - 1 maintainer
poppler-qt5 24.02.0-r0
PDF rendering library based on xpdf 3.014 versions - Latest release: 2 months ago - 3 dependent packages - 1 maintainer
Top 7.3% on alpine edge
10 versions - Latest release: 2 months ago - 2 dependent packages - 1 maintainer
calligra 3.2.1-r47 removed
Office and graphic art suite by KDE10 versions - Latest release: 2 months ago - 2 dependent packages - 1 maintainer
php82-gd 8.2.16-r0
PHP82 extension: GD imaging7 versions - Latest release: 2 months ago - 10 dependent packages - 1 maintainer
php81-gd 8.1.27-r0
PHP81 extension: GD imaging7 versions - Latest release: 2 months ago - 2 dependent packages - 1 maintainer
Top 7.3% on alpine edge
12 versions - Latest release: 2 months ago - 1 maintainer
xterm 390-r0
X Terminal Emulator12 versions - Latest release: 2 months ago - 1 maintainer
Top 7.3% on alpine edge
6 versions - Latest release: 3 months ago - 1 maintainer
tectonic 0.15.0-r0
Tectonic is a modernized, complete, self-contained TeX/LaTeX engine6 versions - Latest release: 3 months ago - 1 maintainer
Top 7.3% on alpine edge
6 versions - Latest release: 3 months ago - 1 maintainer
gimp 2.10.36-r1
GNU Image Manipulation Program6 versions - Latest release: 3 months ago - 1 maintainer
Top 7.2% on alpine edge
4 versions - Latest release: 3 months ago - 2 dependent packages - 1 maintainer
mir 2.16.0-r1
Mir Display Server4 versions - Latest release: 3 months ago - 2 dependent packages - 1 maintainer
Top 7.2% on alpine edge
4 versions - Latest release: 3 months ago - 1 maintainer
mir-demos 2.16.0-r1
Mir Display Server - demonstration programs4 versions - Latest release: 3 months ago - 1 maintainer
Top 8.4% on alpine v3.16
5 versions - Latest release: 4 months ago - 6 dependent packages - 54 stars on GitHub - 1 maintainer
openjdk17-jre 17.0.10_p7-r0
Oracle OpenJDK 17 (JRE)5 versions - Latest release: 4 months ago - 6 dependent packages - 54 stars on GitHub - 1 maintainer
Top 7.5% on alpine v3.16
5 versions - Latest release: 4 months ago - 5 dependent packages - 106 stars on GitHub - 1 maintainer
openjdk11-jre 11.0.22_p7-r0
Oracle OpenJDK 11 (JRE)5 versions - Latest release: 4 months ago - 5 dependent packages - 106 stars on GitHub - 1 maintainer
Top 7.3% on alpine edge
5 versions - Latest release: 4 months ago - 1 maintainer
chafa 1.14.0-r0
Terminal graphics for the 21st century5 versions - Latest release: 4 months ago - 1 maintainer
Top 0.1% on alpine edge
12 versions - Latest release: 4 months ago - 525 dependent packages - 1 maintainer
qt5-qtbase-x11 5.15.10_git20230714-r2
Qt5 GUI-related libraries12 versions - Latest release: 4 months ago - 525 dependent packages - 1 maintainer
Top 7.3% on alpine edge
5 versions - Latest release: 5 months ago - 1 maintainer
podofo 0.10.3-r0
C++ library to work with the PDF file format5 versions - Latest release: 5 months ago - 1 maintainer
Top 7.3% on alpine edge
4 versions - Latest release: 5 months ago - 1 maintainer
nymphcast 0.1-r9
Audio and video casting system with support for custom applications4 versions - Latest release: 5 months ago - 1 maintainer
guacamole-dotool 0.2.0-r1 💰
Guacamole CLI client for scripting3 versions - Latest release: 5 months ago - 1 dependent package - 1 stars on GitHub - 1 maintainer
Top 7.7% on alpine edge
1 version - Latest release: 6 months ago - 1 dependent package - 0 stars on GitHub - 1 maintainer
skia-sharp 0_git20230912-r0
A complete 2D graphic library for drawing Text, Geometries, and Images1 version - Latest release: 6 months ago - 1 dependent package - 0 stars on GitHub - 1 maintainer
Top 6.5% on alpine edge
3 versions - Latest release: 6 months ago - 1 maintainer
lilypond 2.24.3-r0
Music engraving program3 versions - Latest release: 6 months ago - 1 maintainer
Top 0.7% on alpine v3.17
4 versions - Latest release: 6 months ago - 30 dependent packages - 1 maintainer
ffmpeg-libs 5.1.4-r0
Libraries for ffmpeg4 versions - Latest release: 6 months ago - 30 dependent packages - 1 maintainer
ffmpeg-libavfilter 6.0.1-r0
Complete and free Internet live audio and video broadcasting solution for Linux/Unix (libavfilter...3 versions - Latest release: 6 months ago - 46 dependent packages - 1 maintainer
Top 7.3% on alpine edge
11 versions - Latest release: 6 months ago - 1 maintainer
godot-templates 4.1.3-r0
Multi-platform 2D and 3D game engine (templates)11 versions - Latest release: 6 months ago - 1 maintainer
Top 7.3% on alpine edge
13 versions - Latest release: 6 months ago - 1 maintainer
godot 4.1.3-r0
Multi-platform 2D and 3D game engine (GUI editor)13 versions - Latest release: 6 months ago - 1 maintainer
ghostscript 10.02.0-r0
An interpreter for the PostScript language and for PDF3 versions - Latest release: 6 months ago - 1 dependent package - 1 maintainer
imagemagick-libs 7.1.1.13-r1
Collection of tools and libraries for many image formats (libraries)4 versions - Latest release: 6 months ago - 3 dependent packages - 1 maintainer
gimp 2.10.36-r0
GNU Image Manipulation Program2 versions - Latest release: 6 months ago - 1 maintainer
Top 3.0% on alpine edge
12 versions - Latest release: 6 months ago - 1 dependent package - 1 maintainer
wpewebkit 2.40.5-r2
WebKit port optimized for embedded devices12 versions - Latest release: 6 months ago - 1 dependent package - 1 maintainer
openjdk18-jre 18.0.2_p9-r0 removed
Oracle OpenJDK 18 (JRE)2 versions - Latest release: 6 months ago - 1 dependent package - 6 stars on GitHub - 1 maintainer
Top 4.5% on alpine v3.16
4 versions - Latest release: 6 months ago - 16 dependent packages - 1 maintainer
openjdk8-jre 8.392.08-r0
OpenJDK 8 Java Runtime4 versions - Latest release: 6 months ago - 16 dependent packages - 1 maintainer
Top 1.9% on alpine v3.17
4 versions - Latest release: 6 months ago - 10 dependent packages - 1 maintainer
openjdk8-jre 8.392.08-r0
OpenJDK 8 Java Runtime4 versions - Latest release: 6 months ago - 10 dependent packages - 1 maintainer
Top 1.7% on alpine edge
9 versions - Latest release: 6 months ago - 2 dependent packages - 1 maintainer
ghostscript 10.02.1-r0
Interpreter for the PostScript language and for PDF9 versions - Latest release: 6 months ago - 2 dependent packages - 1 maintainer
Top 7.1% on alpine edge
1 version - Latest release: 6 months ago - 1 maintainer
zutty 0.14-r0
Zero-cost unicode teletype - a high-end terminal for low-end systems1 version - Latest release: 6 months ago - 1 maintainer
Top 1.7% on alpine edge
5 versions - Latest release: 6 months ago - 2 dependent packages - 1 maintainer
fontforge-libs 20230101-r4
Free (libre) font editor (libraries)5 versions - Latest release: 6 months ago - 2 dependent packages - 1 maintainer
okular-common 23.04.3-r0
Common files for okular and okular-mobile3 versions - Latest release: 6 months ago - 1 maintainer
Top 7.3% on alpine edge
6 versions - Latest release: 7 months ago - 1 dependent package - 1 maintainer
php8-gd 8.0.30-r1 removed
PHP8 extension: GD imaging6 versions - Latest release: 7 months ago - 1 dependent package - 1 maintainer
Top 7.3% on alpine edge
5 versions - Latest release: 7 months ago - 1 maintainer
flightgear 2020.3.19-r0
Flight Gear Flight Simulator5 versions - Latest release: 7 months ago - 1 maintainer
qt5-qtwebengine 5.15.13-r9
Qt5 - QtWebEngine components12 versions - Latest release: 7 months ago - 17 dependent packages - 1 maintainer
Top 6.3% on alpine edge
2 versions - Latest release: 7 months ago - 1 maintainer
openra 20231010-r0
Open source implementation of the Red Alert engine2 versions - Latest release: 7 months ago - 1 maintainer
thunderbird 91.13.1-r0
Thunderbird email client1 version - Latest release: over 1 year ago - 1 maintainer
chromium 102.0.5005.182-r0
Chromium web browser1 version - Latest release: over 1 year ago - 3 dependent packages - 1 maintainer
Top 0.1% on alpine v3.12
1 version - Latest release: almost 2 years ago - 417 dependent packages - 1 maintainer
cairo 1.16.0-r5
A vector graphics library1 version - Latest release: almost 2 years ago - 417 dependent packages - 1 maintainer
Top 0.6% on alpine v3.16
1 version - Latest release: almost 2 years ago - 46 dependent packages - 1 maintainer
py3-pillow 9.1.1-r0
Python Imaging Library1 version - Latest release: almost 2 years ago - 46 dependent packages - 1 maintainer
Top 9.3% on alpine v3.16
1 version - Latest release: almost 2 years ago - 2 dependent packages - 1 maintainer
texlive-xetex 20220403.62885-r2
TeX typesetting engine supporting modern typography and bidirectional text1 version - Latest release: almost 2 years ago - 2 dependent packages - 1 maintainer
xdvik 20220403.62885-r2
Xdvi from texlive, using the texlive libraries1 version - Latest release: almost 2 years ago - 1 maintainer