Sanity is a content platform with a real-time content backend and an open-source, customisable studio.. The tools below share its categories (APIs, SaaS). Most are still pre-launch, so you are comparing direction and early access rather than finished feature lists.
Stripe
LaunchedPayments infrastructure and APIs for charging cards, running subscriptions and moving money online.
Clerk
LaunchedAuthentication and user management with prebuilt components for React and Next.js.
Dub
LaunchedOpen-source link management with short links, analytics and conversion tracking.
Fly.io
LaunchedA platform for running apps and databases in virtual machines close to your users.
Framer
LaunchedA visual website builder for designing and publishing responsive sites without code.
Inngest
LaunchedDurable workflows and background functions triggered by events, written in your own codebase.
Linear
LaunchedIssue tracking and project planning built for fast-moving software teams.
Mintlify
LaunchedA documentation platform that turns Markdown in your repo into a polished docs site.
Notion
LaunchedA workspace that combines documents, wikis, databases and project tracking.
Railway
LaunchedInfrastructure that deploys from a repo or Dockerfile, with databases and environments built in.
Resend
LaunchedAn email API for developers, with React Email templates and deliverability tooling.
Upstash
LaunchedServerless Redis, vector search and message queues with HTTP APIs.
Know a tool that belongs here? Add it to the radar.