toolgrep / Email & messaging / Knocket
Alternatives to Knocket
Knocket: One Knock. Every Connection. 8 products similar to Knocket, compared on pricing, free tier, API, MCP server, SDK and open source. 8 of 8 have a free tier, 7 of 8 have an API, 3 of 8 offer an MCP server, 3 of 8 are open source.
- Rocket.Chat
Secure communication platform for messaging, voice, video, apps, and AI, deployable on-premises, in sovereign cloud, or air-gapped.
- Flock
Team messenger and online collaboration platform
- Slack
AI work platform and productivity tools
- Telegram
A new era of messaging
- finlight
Real-time financial news API with sentiment analysis, WebSocket streaming, and an advanced query builder
- Gitter
Where developers come to talk.
- Element
Secure collaboration and messaging
- Chanty
Team communication and collaboration software with chat, tasks, Kanban, audio & video calls, and AI agent support
Side by side
| Product | Pricing | Free tier | API | MCP server | SDK | Open source |
|---|---|---|---|---|---|---|
| Knocket | Free | yes | yes | no | yes | no |
| Rocket.Chat | Freemium | yes | yes | no | yes | yes |
| Flock | Freemium | yes | yes | no | no | no |
| Slack | Freemium | yes | yes | yes | yes | no |
| Telegram | Free | yes | yes | no | yes | yes |
| finlight | Freemium | yes | yes | yes | yes | no |
| Gitter | Free | yes | yes | no | no | — |
| Element | Freemium | yes | no | no | no | yes |
| Chanty | Freemium · from $3 per user/month (Business, billed annually); free plan available | yes | yes | yes | — | no |
Facts come from each product's own website, or from its verified owner when they have edited the listing. Each product page shows when it was last verified and how it was extracted. Similarity comes from the products' descriptions.
API
curl https://toolgrep.com/api/products/knocket/alternatives