Mixpanel

GitHub

github.com

GitHub brings together the world's largest community of developers to discover, share, and build better software. Tried and true market leader for code storage.

Segment

segment.com

Segment is a customer data platform (CDP) that helps you collect, clean, and control your customer data.

Figma

figma.com

Figma is a collaborative design tool that helps teams create, test, and ship designs from start to finish.

LaunchDarkly

launchdarkly.com

Development teams are using feature management as a best practice to separate code deployments from feature releases and control their feature lifecycles. LaunchDarkly is a simple offering specifically targeted at feature flagging; no free tier.