Sandbox SDK is a simple oss SDK for spinning sandboxes with one clean syntax.
- Multiple providers: Vercel, E2B, Daytona, Upstash, and more
- Different integrations: AI SDK, Eve, Mastra, etc
- Agent skills included
- Open source, MIT licensed
Email SDK is a lightweight TypeScript library for sending email through Resend, Postmark, SendGrid, Mailgun, Brevo, SMTP, and more with one clean API. Add adapters, set fallbacks, retry failed sends, run test sends from the CLI, and keep provider-specific code out of your app. Write your email logic once, then use whatever provider makes sense.
FeedbackCat helps indie founders and small teams collect feedback, organize feature requests, and prioritize what to build next in one simple workspace. It includes public feedback boards, voting, guest submissions, custom domains, and an affordable $5/month Pro plan for teams that want a clean feedback system without bloated and expensive enterprise software.