Best Free Open-source Software Tools
Explore 21 open-source software alternatives. Find free and open-source tools that excel in open-source functionality.
License model
freeopen-source
Application types
utilities
Platforms
WindowsLinux
Properties
Open-sourceFreeHigh compression ratio
Features
High compressionMultiple formatsAES encryptionSelf-extractingCommand line
Tags
compressionopen-sourcearchiver
License model
freeopen-source
Application types
development
Platforms
WindowsMacOSLinux
Properties
Open-sourceHackableCross-platform
Features
Package managerSmart autocompletionFile system browserMultiple panes
Tags
code-editordevelopmentopen-source
License model
freeopen-source
Application types
media
Platforms
WindowsMacOSLinux
Properties
Open-sourceFreeMulti-track
Features
Multi-track editingEffectsNoise reductionSpectral analysisPlugins
Tags
audio-editingrecordingopen-source
Open source password management solution for individuals, teams, and organizations.
License model
freemiumopen-source
Application types
security
Platforms
WindowsMacOSLinuxiOSAndroidWeb
Properties
Open-sourceSelf-hostableFree tier
Features
Password vaultSecure sharingTwo-factor authSelf-hostingAudit reports
Tags
password-manageropen-sourcesecurity
Free and open-source 3D computer graphics software for modeling, animation, and rendering.
License model
freeopen-source
Application types
graphics
Platforms
WindowsMacOSLinux
Properties
Open-sourceProfessional-gradeAll-in-one
Features
3D modelingAnimationRenderingVideo editingGame creation
Tags
3d-modelinganimationopen-source
License model
freeopen-source
Application types
development
Platforms
WindowsMacOSLinux
Properties
Open-sourceFreeProtocol support
Features
FTP/FTPS/SFTPSite managerDrag & dropTransfer queueRemote file editing
Tags
ftpsftpopen-source
License model
freeopen-source
Application types
graphics
Platforms
WindowsMacOSLinux
Properties
Open-sourceFreeCross-platform
Features
LayersFiltersCustomizable interfacePluginsScripting
Tags
photo-editinggraphicsopen-source
License model
freeopen-source
Application types
video
Platforms
WindowsMacOSLinux
Properties
Open-sourceFreeCross-platform
Features
Multi-track editingTransitionsEffectsAudio editingProxy editing
Tags
video-editingopen-sourcefree
License model
freeopen-source
Application types
security
Platforms
WindowsMacOSLinux
Properties
Open-sourceOfflineLightweight
Features
Local storageStrong encryptionPassword generationPluginsAuto-type
Tags
password-manageropen-sourceoffline
License model
freeopen-source
Application types
graphics
Platforms
WindowsMacOSLinux
Properties
Artist-focusedOpen-sourceAnimation support
Features
Brush enginesAnimationVector toolsHDR paintingResource manager
Tags
digital-paintingartopen-source
License model
freeopen-source
Application types
productivity
Platforms
WindowsMacOSLinux
Properties
Open-sourceFreeMicrosoft Office compatible
Features
WriterCalcImpressDrawBaseMath
Tags
officeopen-sourcedocuments
License model
freemiumopen-source
Application types
communication
Platforms
WebWindowsMacOSLinuxiOSAndroid
Properties
Open-sourceSelf-hostableEnterprise-ready
Features
Self-hostedEnd-to-end encryptionUnlimited message historyCustom integrations
Tags
communicationopen-sourceself-hosted
License model
freeopen-source
Application types
browser
Platforms
WindowsMacOSLinuxiOSAndroid
Properties
Open-sourcePrivacy-focusedCustomizable
Features
Privacy protectionAdd-onsDeveloper toolsSyncCustomization
Tags
browseropen-sourceprivacy
License model
freeopen-source
Application types
communication
Platforms
WindowsMacOSLinux
Properties
Open-sourcePrivacy-focusedExtensible
Features
EmailRSSCalendarAdd-onsEncryption
Tags
emailopen-sourceprivacy
Anonymous VPN service with flat pricing, no personal data collection, and strong commitment to privacy.
License model
paidopen-source
Application types
vpn-and-proxy
Country of origin
Sweden
Platforms
WindowsMacOSLinuxAndroidiOS
Properties
No personal dataOpen source appsSwedish jurisdictionIndependently auditedRAM-only serversAnonymous payments
Features
700+ servers in 40+ countriesAnonymous account creationFlat €5/month pricingWireGuard focusMultihop connectionsDAITA traffic analysis protection
Tags
vpnprivacysecurityanonymousopen-source
License model
freemiumopen-source
Application types
development
Platforms
WindowsMacOSLinux
Properties
Open-sourceWidely usedHigh performance
Features
ACID complianceReplicationPartitioningStored proceduresTriggers
Tags
databasesqlopen-source
License model
freeopen-source
Application types
storage
Platforms
Self-HostedWebWindowsMacOSLinuxiOSAndroid
Properties
Open-sourceSelf-hostedPrivacy-focused
Features
Self-hostedFile syncCalendarContactsMailTalk
Tags
cloud-storageself-hostedopen-source
License model
freeopen-source
Application types
design
Platforms
Web
Properties
Open-sourceSelf-hosted optionBrowser-basedTeam collaborationCross-Platform
Features
PrototypingComponentsVector editingDesign systemsDeveloper handoff
Tags
designuiopen-source
Advanced open-source relational database with SQL compliance and extensibility.
License model
freeopen-source
Application types
development
Platforms
WindowsMacOSLinux
Properties
Open-sourceStandards compliantExtensible
Features
ACID complianceJSON supportFull-text searchCustom data typesExtensions
Tags
databasesqlopen-source
Privacy-focused VPN from the makers of ProtonMail with strong security, Swiss privacy laws, and open-source apps.
License model
freemiumopen-source
Application types
vpn-and-proxy
Country of origin
Switzerland
Platforms
WindowsMacOSLinuxAndroidiOSAndroid TV
Properties
Open sourceSwiss jurisdictionIndependently auditedAES-256 encryptionWireGuard protocolFree tier available
Features
1700+ servers in 60+ countriesSecure Core double VPNTor over VPNNetShield ad blockerPerfect forward secrecyFull disk encryption
Tags
vpnprivacysecurityopen-sourceswiss
License model
freeopen-source
Application types
development
Platforms
WindowsMacOSLinux
Properties
Open-sourceFreeCross-platform
Features
Virtual machinesSnapshotsShared foldersUSB supportNetwork adapters
Tags
virtualizationopen-sourcevm
