Vitality - AI-powered fitness & nutrition tracker Cossmology Profile: https://dub.sh/mZFV7Bm Key People: Kapil Lamba (@kapil4.bsky.social) #HealthTech #OpenSource #OSS #COSS

COSS Weekly: CopilotKit raises $27M, SAP's COSS shopping spree, Anaconda acquires Outerbounds, and more https://dub.sh/k99i08L #OSS #COSS #OpenSource #Cossmology #ChinstrapCommunity

Insomnia - Open-source API client & testing platform Cossmology Profile: https://dub.sh/06xxY8g Key People: Gregory Schier, Cameron HayGlass #APITesting #OpenSource #OSS #COSS

ntfy.sh - Open-source push notification service Cossmology Profile: https://dub.sh/ldE1J17 Key People: Philipp C. Heckel (@binwiederhier.bsky.social) #Notifications #OpenSource #OSS #COSS

Legal Data Hunter - Open legal data index for 110+ countries Cossmology Profile: https://dub.sh/ez7GxQU Key People: Zacharie Laïk #Search #OpenSource #OSS #COSS

Tailscale - Zero-config VPN built on WireGuard (@tailscale.com) Cossmology Profile: https://dub.sh/f3l9hLy Key People: Avery Pennarun (@apenwarr.ca), David Crawshaw (@crawshaw.io), David Carney #VPN #OpenSource #OSS #COSS

Bubble Lab - AI-native workflow automation platform Cossmology Profile: https://dub.sh/F7UU3PR Key People: Selina Li, Zach Zhong #WorkflowAutomation #OpenSource #OSS #COSS

Wraps - Open-source AWS email infrastructure Cossmology Profile: https://dub.sh/QDfrJ8g Key People: Jarod Stewart #TransactionalEmail #OpenSource #OSS #COSS

Swetrix - Cookieless, open-source web analytics Cossmology Profile: https://dub.sh/fFHR3do Key People: Andrii Romasiun (@andriiro.bsky.social) #WebAnalytics #OpenSource #OSS #COSS

Pirsch Analytics - Privacy-friendly, cookieless web analytics (@pirsch.bsky.social) Cossmology Profile: https://dub.sh/DT8ubKi Key People: Marvin Blum, Daniel Schramm #WebAnalytics #OpenSource #OSS #COSS

Read the Docs - Documentation hosting and build platform Cossmology Profile: https://dub.sh/eXmb7zp Key People: Eric Holscher, Anthony Johnson #Documentation #OpenSource #OSS #COSS

Tolgee - Open-source app localization platform Cossmology Profile: https://dub.sh/RiwBflo Key People: Jan Cizmar, Marketa Cizmar #Localization #OpenSource #OSS #COSS

Discourse - Open-source community discussion platform (@discourse.org) Cossmology Profile: https://dub.sh/S9SiMAb Key People: Sam Saffron (@samsaffron1.bsky.social), Jeff Atwood (@codinghorror.surf.social), Robin Ward (@eviltrout.com) #CommunityPlatform #OpenSource #OSS #COSS

Sayr - Source-available project management tool (@doras.to) Cossmology Profile: https://dub.sh/CmjlIjc Key People: Tommy Lundy (@tommerty.doras.to), Trent Hopton #ProjectManagement #OpenSource #OSS #COSS

Sessy - Open-source email observability for AWS SES Cossmology Profile: https://dub.sh/KWN4Orf Key People: Marc Köhlbrugge (@marckohlbrugge.com) #Email #OpenSource #OSS #COSS

Probo - Open-source compliance platform Cossmology Profile: https://dub.sh/bR2sdzB Key People: Antoine Bouchardy, Bryan Frimin (@gearnode.bsky.social) #Compliance #OpenSource #OSS #COSS

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Naftiko - Spec-driven API integration for the AI era (@naftiko.bsky.social) Cossmology Profile: https://dub.sh/x4l4aHF Key People: Jérôme Louvel, Kin Lane #APIManagement #OpenSource #OSS #COSS

Deciso - Open-source firewall and network security (@opnsense.org) Cossmology Profile: https://dub.sh/BiMY7I8 Key People: Robert van Papeveld, Jos Schellevis, Ad Schellevis, Franco Fichtner #Cybersecurity #OpenSource #OSS #COSS

Seita - Open-source EMS for energy flexibility Cossmology Profile: https://dub.sh/4YPKclx Key People: Felix Claessen, Nicolas Höning #EnergyTech #OpenSource #OSS #COSS

Tangled - Federated social coding platform (@tangled.org) Cossmology Profile: https://dub.sh/WcoBQ0i Key People: Anirudh Oppiliappan (@anirudh.fi), Akshay Oppiliappan (@oppi.li) #CollaborativeTools #OpenSource #OSS #COSS

DeepSource - AI code review platform Cossmology Profile: https://dub.sh/MUfaWGq Key People: Sanket Saurav (@sanketsaurav.com), Jai Pradeesh #CodeReview #OpenSource #OSS #COSS

COSS Weekly: ComfyUI raises $30m, Warp.dev goes OSS, Palo Alto Networks acquires Portkey, and more https://dub.sh/72spuFV #OSS #COSS #OpenSource #Cossmology #ChinstrapCommunity

Inferact - LLM inference engine commercialization Cossmology Profile: https://dub.sh/Rz7maG4 Key People: Simon Mo, Woosuk Kwon, Kaichao You, Roger Wang #AIInfrastructure #OpenSource #OSS #COSS

Filigran - Open-source threat management platform Cossmology Profile: https://dub.sh/qMSNzxB Key People: Samuel Hassine (@samuelhassine.bsky.social), Julien Richard #ThreatIntelligence #OpenSource #OSS #COSS

Entire - Developer platform for human-agent collab (@entire.io) Cossmology Profile: https://dub.sh/1yt5jTe Key People: Thomas Dohmke (@ashtom.bsky.social), Georg Friedrich, Cole Driver #AICodingAgents #OpenSource #OSS #COSS

Entire - Developer platform for human-agent collab (@entire.io) Cossmology Profile: https://dub.sh/1yt5jTe Key People: Thomas Dohmke (@ashtom.bsky.social), Georg Friedrich, Cole Driver #AICodingAgents #OpenSource #OSS #COSS

Inth - Open-source developer-first consent banner (@c15t.com) Cossmology Profile: https://dub.sh/Gn70qg5 Key People: Christopher Burns (@burnedchris.com), Will De Ath #Privacy #OpenSource #OSS #COSS

Amical - Open-source AI dictation app Cossmology Profile: https://dub.sh/Vk7tPkn Key People: Haritabh Singh, Naomi Chopra #SpeechRecognition #OpenSource #OSS #COSS

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NestJS - Progressive Node.js framework Cossmology Profile: https://dub.sh/3s59LQC Key People: Kamil Myśliwiec, Mark Pieszak #ApplicationFramework #OpenSource #OSS #COSS

Refact.ai - Open-source AI coding assistant & agent (@refact-ai.bsky.social) Cossmology Profile: https://dub.sh/4ijl2hY Key People: Oleg Klimov, Vlad Guber, Oleg Kiyashko #AICodingAssistant #OpenSource #OSS #COSS

Shuttle - Cloud platform for Rust backend deployment (@shuttle.dev) Cossmology Profile: https://dub.sh/836jRuo Key People: Nodar Daneliya, Christos Hadjiaslanis, Juan Rodriguez Andrade #DeveloperTools #OpenSource #OSS #COSS

Rio - Python web app framework, no JS required Cossmology Profile: https://dub.sh/heH0oAd Key People: Achintya Gupta, Gaurav Jain, Piyush Agarwal #Python #OpenSource #OSS #COSS

ReactiveSearch - Open-source search API gateway and UI toolkit Cossmology Profile: https://dub.sh/f9meeSW Key People: Siddharth Kothari, Sagar Chandarana #Search #OpenSource #OSS #COSS

Warp - AI-powered agentic development terminal (@warpdotdev.bsky.social) Cossmology Profile: https://dub.sh/psvnkt5 Key People: Zach Lloyd #DeveloperTools #OpenSource #OSS #COSS

NocoBase - Open-source no-code/low-code app builder Cossmology Profile: https://dub.sh/4iItoWW Key People: Zhou Yanliang, Chen Lin #NoCode #OpenSource #OSS #COSS

COSS Weekly: Hugging Face on Open vs. Closed, Orkes Raises $60M, DeepSeek seeks $20B valuation, and more https://dub.sh/uV4Hf11 #OSS #COSS #OpenSource #Cossmology #ChinstrapCommunity

SeaweedFS - Distributed object store and file system Cossmology Profile: https://dub.sh/CjnJIDv Key People: Chris Lu #DistributedStorage #OpenSource #OSS #COSS

Chinstrap Community offers a free 5-week workshop on commercial open source software (COSS) for entrepreneurs! Dates are set for Cohort 4: May 28, June 4, June 11, June 18, and June 25. All sessions are at 9 am PT (GMT-7) and offered via Zoom. Visit dub.sh/qfAmm7N for more info.

Lucidworks - AI-powered enterprise search platform Cossmology Profile: https://dub.sh/zTj2ctb Key People: Mike Sinoway, Grant Ingersoll, Yonik Seeley #EnterpriseSearch #OpenSource #OSS #COSS

Yao - Open-source app engine for AI agents Cossmology Profile: https://dub.sh/nRebewT Key People: Max #AIAgents #OpenSource #OSS #COSS

Wave Terminal - AI-native open-source terminal Cossmology Profile: https://dub.sh/3yNM8gk Key People: Mike Sawka #CLITools #OpenSource #OSS #COSS

Orkes - Enterprise platform for reliable apps & AI agents. Cossmology Profile: https://dub.sh/qIoDQHA Key People: Jeu George, Viren Baraiya, Dilip Lukose #AIAgents #OpenSource #OSS #COSS

Arcee AI - Open-weight AI models and enterprise agentic AI Cossmology Profile: https://dub.sh/2l907z9 Key People: Mark McQuade, Jacob Solawetz, Brian Benedict, Lucas Atkins #LLMs #OpenSource #OSS #COSS

TrustGraph - Graph-native AI context platform (@trustgraph.bsky.social) Cossmology Profile: https://dub.sh/yDcLAoc Key People: Daniel Davis, Mark Adams (@cybermaggedon.bsky.social) #KnowledgeGraph #OpenSource #OSS #COSS

Transactility - Commercial licensing and support for jPOS Cossmology Profile: https://dub.sh/transactility Key People: Alejandro Revilla, Constantino Voulgaris #Payments #OpenSource #OSS #COSS

📰 COSS Weekly — Week of April 20, 2026 Cal.com Goes Closed Source, Mistral Borrows $830M for Data Centers, OpenAI Acquires Promptfoo, and more Read the full issue: dub.sh/coss-weekly-... #COSS #OpenSource

📰 COSS Weekly — Week of April 20, 2026 Cal.com Goes Closed Source, Mistral Borrows $830M for Data Centers, OpenAI Acquires Promptfoo, and more Read the full issue: https://dub.sh/coss-weekly-2026-04-20 #COSS #OpenSource

Superset - IDE for running parallel AI coding agents Cossmology Profile: https://dub.sh/krO6Tq9 Key People: Avi Peltz, Satya Patel, Kiet Ho #AICodingAgents #OpenSource #OSS #COSS