Whop

NATS by Synadia is an open-source messaging system, a secure connective technology for modern distributed systems at the edge and in the cloud. They reached out to Evil Martians to improve the performance of NATS's Ruby SDK, and we ended up speeding it up by more than three times for high-load cases.

Lago is an open-source metering and billing system that partnered with Evil Martians to scale their engineering team, keep product development moving fast, and maintain high quality.