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 623+ commercial products
WordPress27
Shopify20
Amazon SES7
Squarespace6H
Hey4G
GTXGaming4B
Brevo4G
GameServers4DynamoDB3U
Utterances3I
Imgur3
Amazon Alexa3C
Caldav.cloud3C
Charybdis3WordPress27Shopify20Amazon SES7Squarespace6H
Hey4G
GTXGaming4B
Brevo4G
GameServers4DynamoDB3U
Utterances3I
Imgur3Amazon Alexa3C
Caldav.cloud3C
Charybdis3A
Apple Calendar Server3F
Folio2M
Mailgun2S
ShareX2S
Selenium2C
Cypress2O
OutSystems2Alexa2E
Ergo2L
Langsmith2N
NETSCOUT GENBAND2A
Appointment Reminder2A
Apple Mail2Q
QuickBooks2F
FreshBooks2L
Libera.Chat IRCd2F
Fullstory2C
Courier Mail Server2P
Pastebin2S
Spark Email2L
Logrocket2A
Admin Bro2C
Clerk1C
CVAT1S
SmugMug1S
Softr11
15Five1L
LocalLine1AWS IoT Core1C
Cline1R
Replika1F
FlutterFlow1L
LabelImg1D
DocuSafe1M
MinIO1S
Strava1T
TestCafe1S
StarCraft1T
Temp Mail1W
Warcraft III1F
FiveM1I
Institutional Repositories Plus1B
Bitrise1A
Atlassian Cloud1C
Character.AI1W
Wasabi1D
Dyspatch1M
Mylar1S
Slite1L
Livedesk1C
Company of Heroes1M
Microsoft PowerApps1A
Apple Calendar Server3F
Folio2M
Mailgun2S
ShareX2S
Selenium2C
Cypress2O
OutSystems2Alexa2E
Ergo2L
Langsmith2N
NETSCOUT GENBAND2A
Appointment Reminder2A
Apple Mail2Q
QuickBooks2F
FreshBooks2L
Libera.Chat IRCd2F
Fullstory2C
Courier Mail Server2P
Pastebin2S
Spark Email2L
Logrocket2A
Admin Bro2C
Clerk1C
CVAT1S
SmugMug1S
Softr11
15Five1L
LocalLine1AWS IoT Core1C
Cline1R
Replika1F
FlutterFlow1L
LabelImg1D
DocuSafe1M
MinIO1S
Strava1T
TestCafe1S
StarCraft1T
Temp Mail1W
Warcraft III1F
FiveM1I
Institutional Repositories Plus1B
Bitrise1A
Atlassian Cloud1C
Character.AI1W
Wasabi1D
Dyspatch1M
Mylar1S
Slite1L
Livedesk1C
Company of Heroes1M
Microsoft PowerApps1D
Descript1S
Supreme Commander1T
TrainingPeaks1A
Aprimo1A
Apify1E
ElevenLabs1S
Sessionize1C
Cisco Unified Communications Manager1C
Civil Comments1L
LastPass1D
DirectAdmin1R
Runway1W
Windsurf1S
Stripo1R
Resend13
3CX1C
Composable Commerce1G
Google Cloud Text-to-Speech1T
Twilio Programmable Chat1I
Integration.io1G
GitHub Actions1C
Catbox1R
Roboflow1S
SendBird1B
Bright Data1A
Arcane1X
Xero1D
Dex1I
ISPConfig1L
Lattice1W
Website.change.monitor1P
Pst File Viewer1e
etcd Cloud1A
Airmeet1Amazon Kindle1P
Promptly1A
Azure Boards1P
Pictory11
1Password1S
Synthesia1B
Brightcove1I
Imgbb1A
Appointy1L
Lanyrd1S
Setmore1P
Pastie1C
Calibre Companion1P
Prompt.com1M
Mendix1R
RedM1V
Verba1R
ReadabilityPremium1G
Greenhouse1D
DrapCode1G
GameVault1
Instagram1C
Confluence Cloud0D
Descript1S
Supreme Commander1T
TrainingPeaks1A
Aprimo1A
Apify1E
ElevenLabs1S
Sessionize1C
Cisco Unified Communications Manager1C
Civil Comments1L
LastPass1D
DirectAdmin1R
Runway1W
Windsurf1S
Stripo1R
Resend13
3CX1C
Composable Commerce1G
Google Cloud Text-to-Speech1T
Twilio Programmable Chat1I
Integration.io1G
GitHub Actions1C
Catbox1R
Roboflow1S
SendBird1B
Bright Data1A
Arcane1X
Xero1D
Dex1I
ISPConfig1L
Lattice1W
Website.change.monitor1P
Pst File Viewer1e
etcd Cloud1A
Airmeet1Amazon Kindle1P
Promptly1A
Azure Boards1P
Pictory11
1Password1S
Synthesia1B
Brightcove1I
Imgbb1A
Appointy1L
Lanyrd1S
Setmore1P
Pastie1C
Calibre Companion1P
Prompt.com1M
Mendix1R
RedM1V
Verba1R
ReadabilityPremium1G
Greenhouse1D
DrapCode1G
GameVault1Instagram1C
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.
