toolgrep / MCP servers / quickS3
Alternatives to quickS3
quickS3: Hosted remote MCP server that connects AI agents to S3-compatible object storage with OAuth sign-in and folder-level roles, without access keys on the client machine. 8 products similar to quickS3, compared on pricing, free tier, API, MCP server, SDK and open source. 7 of 8 have a free tier, 8 of 8 have an API, 7 of 8 offer an MCP server, 1 of 8 is open source.
- Stream Vessel
S3 browser, file manager & MCP server
- agentleFS
Agent permissions for files your team shares
- Auth0
Secure AI Agent & User Authentication
- Yungle
File sharing for AI agents over MCP
- GoodSign MCP Server
MCP server that lets AI agents send, track and manage GoodSign e-signature documents
- Mailbox MCP
Remote MCP server that connects an existing Gmail, Outlook, Microsoft 365 or IMAP mailbox to Claude, ChatGPT or any MCP client for reading, searching, sending and filing email.
- Backblaze B2 Cloud Storage
S3-compatible object storage for AI and data-intensive workloads
- Activepieces
Open-source workflow automation and AI agents platform with chat, flows, tables, and 770+ app integrations
Side by side
| Product | Pricing | Free tier | API | MCP server | SDK | Open source |
|---|---|---|---|---|---|---|
| quickS3 | Freemium | yes | yes | yes | no | no |
| Stream Vessel | Free | yes | yes | yes | no | — |
| agentleFS | Freemium | yes | yes | yes | yes | no |
| Auth0 | Freemium | yes | yes | yes | yes | no |
| Yungle | Freemium · from EUR 5/month | yes | yes | yes | no | no |
| GoodSign MCP Server | Usage-based · from $1.50 per document (credit); included with any paid GoodSign account | no | yes | yes | yes | no |
| Mailbox MCP | Freemium · from £2.92/month per mailbox (paid annually at £34.99 + VAT) | yes | yes | yes | — | no |
| Backblaze B2 Cloud Storage | Usage-based | yes | yes | no | yes | no |
| Activepieces | Freemium | yes | yes | yes | yes | yes |
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
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