Discover
the Best
Open Source Projects
Browse 10,000+ open source projects. Find the best alternatives to popular software.
Discover the best open source projects on GitHub. Browse by category, compare by stars and community activity, and find your next favorite open source software — whether you're building, learning, or looking for tools.
Replace your paid tools
Open source alternatives to 677+ commercial products
WordPress27
Shopify20
Amazon SES7
Squarespace6S
Strava4C
Charybdis4I
Imgur4B
Brevo4G
GTXGaming4H
Hey4G
GameServers4A
Apple Calendar Server4C
Caldav.cloud4
Amazon Alexa3DynamoDB3L
Libera.Chat IRCd3E
Ergo3WordPress27Shopify20Amazon SES7Squarespace6S
Strava4C
Charybdis4I
Imgur4B
Brevo4G
GTXGaming4H
Hey4G
GameServers4A
Apple Calendar Server4C
Caldav.cloud4Amazon Alexa3DynamoDB3L
Libera.Chat IRCd3E
Ergo3U
Utterances3S
ShareX3T
TrainingPeaks3A
Admin Bro2S
Selenium2S
Spark Email2B
Bright Data2F
Folio2C
Courier Mail Server2L
Langsmith2M
Mailgun2A
Apple Mail2F
FreshBooks2N
NETSCOUT GENBAND2Q
QuickBooks2Alexa2S
SmugMug2O
OutSystems2C
Cypress2A
Apify2P
Pastebin2A
Appointment Reminder2M
Mylar1A
Azure Boards1P
Pictory11
1Password1B
Brightcove1R
Replika1B
Bitrise1D
Dyspatch1W
Wasabi1C
Character.AI1A
Atlassian Cloud1I
Imgbb1
Cloudinary1F
FiveM1I
Institutional Repositories Plus1L
Lanyrd1S
Setmore1P
Pastie1C
Calibre Companion1
Instagram1P
Prompt.com1R
RedM1V
Verba1U
Utterances3S
ShareX3T
TrainingPeaks3A
Admin Bro2S
Selenium2S
Spark Email2B
Bright Data2F
Folio2C
Courier Mail Server2L
Langsmith2M
Mailgun2A
Apple Mail2F
FreshBooks2N
NETSCOUT GENBAND2Q
QuickBooks2Alexa2S
SmugMug2O
OutSystems2C
Cypress2A
Apify2P
Pastebin2A
Appointment Reminder2M
Mylar1A
Azure Boards1P
Pictory11
1Password1B
Brightcove1R
Replika1B
Bitrise1D
Dyspatch1W
Wasabi1C
Character.AI1A
Atlassian Cloud1I
Imgbb1Cloudinary1F
FiveM1I
Institutional Repositories Plus1L
Lanyrd1S
Setmore1P
Pastie1C
Calibre Companion1Instagram1P
Prompt.com1R
RedM1V
Verba1G
GameVault1R
ReadabilityPremium1G
Greenhouse1S
Sessionize1D
DrapCode1C
Clerk1C
CVAT1C
Cisco Unified Communications Manager1S
Softr1P
Promptly13
3CX11
15Five1L
LocalLine1AWS IoT Core1C
Cline1S
Synthesia1F
FlutterFlow1L
LabelImg1D
DocuSafe1M
MinIO1A
Appointy1T
TestCafe1T
Temp Mail1W
Warcraft III1M
Mendix1E
ElevenLabs1F
Fullstory1S
StarCraft1S
Supreme Commander1R
Runway1W
Windsurf1D
Descript1L
Logrocket1S
Stripo1R
Resend1M
Microsoft PowerApps1C
Composable Commerce1G
Google Cloud Text-to-Speech1T
Twilio Programmable Chat1I
Integration.io1G
GitHub Actions1C
Catbox1R
Roboflow1S
SendBird1A
Arcane1X
Xero1C
Company of Heroes1D
Dex1I
ISPConfig1L
Livedesk1L
Lattice1W
Website.change.monitor1P
Pst File Viewer1e
etcd Cloud1S
Slite1A
Airmeet1Amazon Kindle1C
Civil Comments1L
LastPass1D
DirectAdmin1A
Aprimo1C
Confluence Cloud0G
GameVault1R
ReadabilityPremium1G
Greenhouse1S
Sessionize1D
DrapCode1C
Clerk1C
CVAT1C
Cisco Unified Communications Manager1S
Softr1P
Promptly13
3CX11
15Five1L
LocalLine1AWS IoT Core1C
Cline1S
Synthesia1F
FlutterFlow1L
LabelImg1D
DocuSafe1M
MinIO1A
Appointy1T
TestCafe1T
Temp Mail1W
Warcraft III1M
Mendix1E
ElevenLabs1F
Fullstory1S
StarCraft1S
Supreme Commander1R
Runway1W
Windsurf1D
Descript1L
Logrocket1S
Stripo1R
Resend1M
Microsoft PowerApps1C
Composable Commerce1G
Google Cloud Text-to-Speech1T
Twilio Programmable Chat1I
Integration.io1G
GitHub Actions1C
Catbox1R
Roboflow1S
SendBird1A
Arcane1X
Xero1C
Company of Heroes1D
Dex1I
ISPConfig1L
Livedesk1L
Lattice1W
Website.change.monitor1P
Pst File Viewer1e
etcd Cloud1S
Slite1A
Airmeet1Amazon Kindle1C
Civil Comments1L
LastPass1D
DirectAdmin1A
Aprimo1C
Confluence Cloud0Built by a developer, for developers
GitHub has 200M+ repos.
Good luck finding the right one.
I kept Googling “open source alternative to X” and landing on the same SEO-farmed listicles. So I built this — a directory that actually shows you the data that matters: stars, last commit, license, and whether anyone is still maintaining the thing.
No paid placements. Projects are ranked by real GitHub activity, not who paid for a listing.
Skip the “awesome lists” rabbit hole. Browse by category, see screenshots, and compare alternatives side by side.
Save your SaaS budget. Every tool here is free and open source. Self-host it, fork it, make it yours.
Frequently Asked Questions
What is open source software?
Open source software is software with source code that anyone can inspect, modify, and enhance. It is typically free to use and developed collaboratively by a community of developers.
How do I find the best open source alternatives?
You can browse open source alternatives by category, search by the commercial software you want to replace, or compare projects by GitHub stars, community activity, and features on OpenSourceProjects.cc.
What does "self-hosted" mean for open source projects?
Self-hosted means you can install and run the software on your own server or infrastructure, giving you full control over your data and customization, instead of relying on a third-party cloud service.
Why use open source projects instead of proprietary tools?
Open source software offers transparency, community-driven development, no vendor lock-in, and often zero licensing cost. You can audit the code for security, customize it to your needs, and benefit from contributions by thousands of developers worldwide.
Are open source projects free to use?
Most open source projects are free to download and use. Some offer paid hosting, support, or enterprise features, but the core software remains free under open source licenses like MIT, Apache 2.0, or GPL.
