Open source focus
Lemmy is open source
Open Source Alternatives to Lemmy
60 open source Social Media options similar to Lemmy, ranked by named competitors first, sector overlap, and our 0-100 AI-readiness score. Each profile notes license and self-hosting where we have it.
Mastodon61Social MediaJena, Germany$63.0MOpen source · Self-hostable
Automattic71Web DevelopmentSan Francisco, United States$300.0MOpen source · Self-hostable
Civitai60Generative AISan Francisco, United States$5.1MOpen source · Self-hostable
Manyverse18Decentralized Social NetworkHelsinki, FinlandOpen source · Self-hostable
Aemetis15Climate TechCupertino, United StatesOpen source · Self-hostable
eToro85FintechLimassol, Cyprus$524.0MOpen source
Waze68MobilityTel Aviv, Israel$67.0MOpen source
twittpr.com61Social PlatformSan Francisco, United States$20.3BOpen source
Nomic AI59AI Infrastructure StackNew York City, United States$19.0MOpen source · Self-hostable
Chai Research58AI CompanionPalo Alto, United States$55.0MOpen source
Bitwarden48CybersecuritySanta Barbara, United States$130.0MOpen source · Self-hostable
AltStore PAL47SoftwareSan Francisco, USA$6.0MOpen source
Mycroft AI38Voice AssistantKansas City, United States$4.0MOpen source · Self-hostable
OWASP37CybersecurityRaleigh, USAOpen source · Self-hostable
Artik35Social MediaOpen source
Audius34Music TechSan Francisco, United States$5.0MOpen source
Open Bitcoin Tracker32FintechOpen source · Self-hostable
Blockmesh Network31BlockchainIsrael, IsraelOpen source · Self-hostable
GPT4All26Foundation ModelNew York, United StatesOpen source · Self-hostable
Omnivore23Consumer AppOpen source · Self-hostable
Nike Run Club18Consumer AppBeaverton, United StatesOpen source
FxTwitter18Open SourceOpen source · Self-hostable
Codel15Agentic AIOpen source · Self-hostable
3dfy Labs143D ScanningToronto, CanadaOpen source
vxtwitter.com10Web DevelopmentSan Francisco, United StatesOpen source · Self-hostable
Hacker News10Computer ScienceMountain View, United StatesOpen source
PFPMe10Consumer AppOpen source
MCP.so10Developer ToolsOpen source · Self-hostable
OpenTools10AI Tool MarketplaceSan Francisco, United StatesOpen source
PrivateGPT5AI Search EngineToronto, CanadaOpen source · Self-hostable
Wowooo Limited4Creator EconomyOpen source
QuotarocketStartupOpen source
OsrsflipGamingOpen source · Self-hostable
Salon MahjongGamingOpen source
- Recipe CommonsCultural Heritage
Open source · Self-hostable
MeetpulseConsumer AppOpen source
Off GridEdge AIOpen source · Self-hostable
Snyk85AI Coding AssistantBoston, United States$488.5MOpen source · Self-hostable
Ubuntu85Operating SystemsLondon, United Kingdom$63.0MOpen source · Self-hostable
Elasticsearch85Search EngineAmsterdam, Netherlands$104.0MOpen source · Self-hostable
OpenAI84Artificial IntelligenceSan Francisco, United States$493.9BOpen source
Databricks82Data AnalyticsSan Francisco, United States$31.7BOpen source · Self-hostable
Netflix81Media & EntertainmentLos Gatos, USA$4.7BOpen source
- GRGrafana Labs80ObservabilityNew York, United States
Open source · Self-hostable
Elementor79WebsiteRamat Gan, Israel$65.8MOpen source · Self-hostable
Nike79Athletic FootwearBeaverton, United States$2.8BOpen source
SpaceXAI76Frontier AI LabPalo Alto, United States$90.0BOpen source
Together AI76AI InfrastructureSan Francisco, United States$906.0MOpen source · Self-hostable
WooCommerce (Automattic)76E-commerceSan Francisco, United States$815.7MOpen source · Self-hostable
Hugging Face76AINew York, United States$395.2MOpen source · Self-hostable
Strava76Fitness TrackingSan Francisco, United States$237.5MOpen source
NemoClaw75Artificial IntelligenceOpen source · Self-hostable
Redis75DatabaseSan Francisco, United States$906.8MOpen source · Self-hostable
Mastra75Agentic AISan Francisco, United States$35.5MOpen source · Self-hostable
Grafana Cloud74ObservabilityNew York, United States$2.1BOpen source · Self-hostable
Moon Active72GamingTel Aviv, Israel$425.0MOpen source
Osaurus71Artificial IntelligenceSan Francisco, USA$63.0MOpen source
Airbyte71Data IntegrationSan Francisco, United States$181.0MOpen source · Self-hostable
Perplexity AI71Search EngineSan Francisco, United States$591.4MOpen source
Arena71Artificial IntelligenceBerkeley, USA$250.0MOpen source
| Company | Sector | License | HQ | Funding | Score | Website |
|---|---|---|---|---|---|---|
| Mastodon | Social Media | Open source · Self-hostable | Jena, Germany | $63.0M | 61 | |
| Automattic | Web Development | Open source · Self-hostable | San Francisco, United States | $300.0M | 71 | |
| Civitai | Generative AI | Open source · Self-hostable | San Francisco, United States | $5.1M | 60 | |
| Manyverse | Decentralized Social Network | Open source · Self-hostable | Helsinki, Finland | — | 18 | |
| Aemetis | Climate Tech | Open source · Self-hostable | Cupertino, United States | — | 15 | |
| eToro | Fintech | Open source | Limassol, Cyprus | $524.0M | 85 | |
| Waze | Mobility | Open source | Tel Aviv, Israel | $67.0M | 68 | |
| twittpr.com | Social Platform | Open source | San Francisco, United States | $20.3B | 61 | |
| Nomic AI | AI Infrastructure Stack | Open source · Self-hostable | New York City, United States | $19.0M | 59 | |
| Chai Research | AI Companion | Open source | Palo Alto, United States | $55.0M | 58 | |
| Bitwarden | Cybersecurity | Open source · Self-hostable | Santa Barbara, United States | $130.0M | 48 | |
| AltStore PAL | Software | Open source | San Francisco, USA | $6.0M | 47 | |
| Mycroft AI | Voice Assistant | Open source · Self-hostable | Kansas City, United States | $4.0M | 38 | |
| OWASP | Cybersecurity | Open source · Self-hostable | Raleigh, USA | — | 37 | |
| Artik | Social Media | Open source | — | — | 35 | |
| Audius | Music Tech | Open source | San Francisco, United States | $5.0M | 34 | |
| Open Bitcoin Tracker | Fintech | Open source · Self-hostable | — | — | 32 | |
| Blockmesh Network | Blockchain | Open source · Self-hostable | Israel, Israel | — | 31 | |
| GPT4All | Foundation Model | Open source · Self-hostable | New York, United States | — | 26 | |
| Omnivore | Consumer App | Open source · Self-hostable | — | — | 23 | |
| Nike Run Club | Consumer App | Open source | Beaverton, United States | — | 18 | |
| FxTwitter | Open Source | Open source · Self-hostable | — | — | 18 | |
| Codel | Agentic AI | Open source · Self-hostable | — | — | 15 | |
| 3dfy Labs | 3D Scanning | Open source | Toronto, Canada | — | 14 | |
| vxtwitter.com | Web Development | Open source · Self-hostable | San Francisco, United States | — | 10 | |
| Hacker News | Computer Science | Open source | Mountain View, United States | — | 10 | |
| PFPMe | Consumer App | Open source | — | — | 10 | |
| MCP.so | Developer Tools | Open source · Self-hostable | — | — | 10 | |
| OpenTools | AI Tool Marketplace | Open source | San Francisco, United States | — | 10 | |
| PrivateGPT | AI Search Engine | Open source · Self-hostable | Toronto, Canada | — | 5 | |
| Wowooo Limited | Creator Economy | Open source | — | — | 4 | |
| Quotarocket | Startup | Open source | — | — | — | |
| Osrsflip | Gaming | Open source · Self-hostable | — | — | — | |
| Salon Mahjong | Gaming | Open source | — | — | — | |
| Cultural Heritage | Open source · Self-hostable | — | — | — | ||
| Meetpulse | Consumer App | Open source | — | — | — | |
| Off Grid | Edge AI | Open source · Self-hostable | — | — | — | |
| Snyk | AI Coding Assistant | Open source · Self-hostable | Boston, United States | $488.5M | 85 | |
| Ubuntu | Operating Systems | Open source · Self-hostable | London, United Kingdom | $63.0M | 85 | |
| Elasticsearch | Search Engine | Open source · Self-hostable | Amsterdam, Netherlands | $104.0M | 85 | |
| OpenAI | Artificial Intelligence | Open source | San Francisco, United States | $493.9B | 84 | |
| Databricks | Data Analytics | Open source · Self-hostable | San Francisco, United States | $31.7B | 82 | |
| Netflix | Media & Entertainment | Open source | Los Gatos, USA | $4.7B | 81 | |
| GRGrafana Labs | Observability | Open source · Self-hostable | New York, United States | — | 80 | |
| Elementor | Website | Open source · Self-hostable | Ramat Gan, Israel | $65.8M | 79 | |
| Nike | Athletic Footwear | Open source | Beaverton, United States | $2.8B | 79 | |
| SpaceXAI | Frontier AI Lab | Open source | Palo Alto, United States | $90.0B | 76 | |
| Together AI | AI Infrastructure | Open source · Self-hostable | San Francisco, United States | $906.0M | 76 | |
| WooCommerce (Automattic) | E-commerce | Open source · Self-hostable | San Francisco, United States | $815.7M | 76 | |
| Hugging Face | AI | Open source · Self-hostable | New York, United States | $395.2M | 76 | |
| Strava | Fitness Tracking | Open source | San Francisco, United States | $237.5M | 76 | |
| NemoClaw | Artificial Intelligence | Open source · Self-hostable | — | — | 75 | |
| Redis | Database | Open source · Self-hostable | San Francisco, United States | $906.8M | 75 | |
| Mastra | Agentic AI | Open source · Self-hostable | San Francisco, United States | $35.5M | 75 | |
| Grafana Cloud | Observability | Open source · Self-hostable | New York, United States | $2.1B | 74 | |
| Moon Active | Gaming | Open source | Tel Aviv, Israel | $425.0M | 72 | |
| Osaurus | Artificial Intelligence | Open source | San Francisco, USA | $63.0M | 71 | |
| Airbyte | Data Integration | Open source · Self-hostable | San Francisco, United States | $181.0M | 71 | |
| Perplexity AI | Search Engine | Open source | San Francisco, United States | $591.4M | 71 | |
| Arena | Artificial Intelligence | Open source | Berkeley, USA | $250.0M | 71 |