Gitignore we use at work. Shared in the hope of saving time making a new one and getting perfection out of it. (Suggestions are highly appreciated)

.gitignore

###############################################################################
###                              PRIVATE FILES                              ###
###############################################################################

# - Private Gradle
local.properties

# Only useful if you work in my team, these are private projects
# so nobody should really need them. Here for completeness.
# - "Lumen" Buildbot
.lumen/
build-config.lumen
build-data.lumen
customs.lumen

# - "Bella" Extension
.bella/
bella.properties

# - AI Informations
.coral/
coral.config
coral.db

# - Signing Configurations (make sure to steal this if you steal something)
signing.properties
*.jks
*.keystore


###############################################################################
###                          ANDROID STUDIO FILES                           ###
###############################################################################

#------------------------------------------------------------------------------#
#                                   GENERIC                                    #
#------------------------------------------------------------------------------#

# - Generated folders
bin/
gen/

# - Proguard informations
proguard/

# - Android Packages
*.apk
*.ap_

# - Dalvik VM
*.dex

# - Java Classes
*.class

# - Java Native
*.o
*.out
*.dylib
*.obj
*.so

# - Logs
log/
*.log

#------------------------------------------------------------------------------#
#                          STUDIO/INTELLIJ SPECIFIC                            #
#------------------------------------------------------------------------------#

# - Gradle
.idea/gradle.xml
.gradle/

# - Maven
target/

# - Build caches
build/
*/build/
out/
*/out/

# - NDK Build caches
.externalNativeBuild

# - Navigation cache
.navigation/

# - App Captures
captures/

# - IDEA Configuration (user-specific informations)
.idea/dictionaries/
.idea/libraries/
.idea/shelf/
.idea/workspace.xml
.idea/tasks.xml
.idea/misc.xml

# - IDEA Configuration (user-specific data)
.idea/dataSources.ids
.idea/dataSources.xml
.idea/sqlDataSources.xml
.idea/dynamic.xml
.idea/uiDesigner.xml

# - IDEA Mongo Plugin
.idea/mongoSettings.xml

# - IDEA JIRA Plugin
atlassian-ide-plugin.xml

# - Android Studio Crashlytics Plugin
com_crashlytics_export_strings.xml
crashlytics.properties
crashlytics-build.properties
fabric.properties

# - Project Configurations
.idea_modules/
*.iml
*.ipr
*.iws


###############################################################################
###                         OPERATIVE SYSTEM FILES                          ###
###############################################################################

#------------------------------------------------------------------------------#
#                                    LINUX                                     #
#------------------------------------------------------------------------------#

# - Backups
~*

# - Folder configuration
.directory

# - Trash copies
.Trash-*

#------------------------------------------------------------------------------#
#                                  MAC OS X                                    #
#------------------------------------------------------------------------------#
# Mac OS is worse than Windows with all this excessive, horrible data caching...

# - Chached generic files
.DS_Store
.AppleDouble
.LSOverride

# - Thumbnails
._*

# - Device Caches (if repo synced to root of a device)
.DocumentRevisions-V100
.fseventsd
.Spotlight-V100
.TemporaryItems
.Trashes
.VolumeIcon.icns

# - AFP Sharing Informations (if repo is shared via AFP)
.AppleDB
.AppleDesktop
Network Trash Folder
Temporary Items
.apdisk

#------------------------------------------------------------------------------#
#                                   WINDOWS                                    #
#------------------------------------------------------------------------------#
# - Thumbnails
Thumbs.db
ehthumbs.db

# - Folder Configuration
Desktop.ini

# - Trash copies
$RECYCLE.BIN/

# - Links
*.lnk