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COSS Weekly #50

COSS Weekly, Issue #50: October 10th, 2021

Here's the fiftieth issue of COSS Weekly, the global commercial open source (COSS) company category newsletter, brought to you every Sunday afternoon (Pacific Time) by the team at OSS Capital, creators and stewards of COSS Community and Open Core Summit.

We deliver only the most fresh 😋 news from the previous week in COSS across: Funding, Content, Liquidity and $COSS (Public Markets).

This last week saw $508.8M in funding for Chronosphere,, Esper, Gretel, ArangoDB, Pluribus Networks, Appsmith, and Wasp!


💰 COSS Funding: $508.8M

  • Chronosphere, building data observability tools, announced their $200M Series C led by General Atlantic. Link

  •, building service mesh tools for application networks, announced their $135M Series C led by Altimeter Capital. Link

  • Esper, helping organizations remotely scale, manage, secure, and update connected devices with DevOps practices, announced their $60M Series C led by Insight Partners. Link

  • Gretel, building privacy engineering as a service, announced their $50M Series B led by Anthos Capital. Link

  • ArangoDB, building an open source graph database, announced their $27.8M Series B led by Iris Capital. Link

  • Pluribus Networks, enabling distributed cloud networking, announced their $20M funding round led by Morgan Stanley Expansion Capital. Link

  • Appsmith, making low-code tools for internal business app development, announced their $8M Series A and $2.5M Seed led by Accel, Canaan Partners, and Bessemer. Link

  • Polar Signals, building tools for continuous profiling storage, announced their $4M Seed led by GV and Lightspeed. Link

  • Wasp, building a language for quickly programming business logic, announced their $1.5M Seed led by Lunar Ventures and HV Capital. Link

📚 COSS Content

💸 COSS Liquidity (M&A + IPOs)

  • Software development platform Gitlab files to raise as much as $624 million in a U.S. IPO. Link

  • Databricks acquires 8080 Labs to extend its low-code/no-code capabilities. Link

  • "We are thrilled to announce that is joining forces with @Celonis. Hear what @Chalkiopoulos has to say about this new chapter in bringing the power of real-time to the world through Lenses." Link

📊 $COSS - Public Markets

  • $COSS markets up 0.87% last week

  • Latest $COSS markets snapshot below as of market close last Friday courtesy of Koyfin.

Koyfin Market Data

This issue of COSS Weekly is brought to you by Mayfield Fund

Mayfield Fund Graphic

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