nomoat / MantleDB / Alternatives
Alternatives to MantleDB
MantleDB: Store and fetch JSON over HTTP with no signup or schema, plus an MCP server so AI assistants can keep memory, good for prototypes. Here are 24 other products that do a similar job. Of these, 19 have a free plan.
- memsprout
Team members record their knowledge once and an MCP server passes it to ChatGPT, Copilot, Cursor and Claude Code as shared context.
Since 2026
Subscription · Developer tools · Developers
- CalmSEO
A hosted MCP server and REST API that gives Claude, ChatGPT or Cursor your Search Console data, SERPs and keyword volumes.
Since 2026
Free plan · SEO
- cloro
API that fetches Google results and answers from ChatGPT, Gemini and others as clean data, for SEO tracking.
Since 2025
Subscription · SEO · Agencies
- Colorize
Paste a website address to get its colour palette, or call an API for a site's logo, colours and fonts.
Since 2025
Free plan · Design and images · Developers
- curl.md
Converts any web page into compact markdown that coding agents can read, through a URL prefix, CLI or API.
Since 2026
Free plan · Developer tools · Developers
- Desktop Commander
Lets ChatGPT, Claude and other AI chat apps read files and run commands on your own machine or server.
Since 2025
Free plan · Developer tools · Individuals and families
- Dexio
A hosted wiki that Claude, ChatGPT, Cursor and other AI agents share through MCP, so people can see and edit what the agents know.
Free plan · Developer tools · Developers
- emailvalidation.io
Checks single addresses or whole lists for syntax, mail server and mailbox problems, by upload or API, with an email finder too.
Free plan · Email marketing
- Itsuki
Shared memory store that saves facts from one AI tool and recalls them in others like Claude, ChatGPT and Cursor.
Since 2026
Free · Developer tools · Developers
- localscreenshot
Lets AI assistants and developers grab clean web page screenshots from 227 countries through MCP, a CLI or a REST API.
Free plan · Developer tools · Agencies
- Revdoku
Gives AI agents email inboxes of their own to get mail, reply and keep files, with spam filtering, via API, MCP or CLI.
Free plan · Developer tools · Developers
- Routebase
Keeps API specs, mock servers, tests and published docs in step from a single spec, for software teams.
Since 2026
Free plan · Developer tools · Developers
- Signbee
An API and MCP server that lets AI agents send contracts and collect two-party signatures by email.
Since 2026
Free plan · Documents and e-signature · Developers
- TinyFn
An API and MCP server with hundreds of exact math, text and conversion tools so AI agents stop guessing.
Since 2026
Free plan · Developer tools · Developers
- ZeroDrop
Throwaway test inboxes that pull out one-time codes and magic links, so developers can test login emails in CI.
Since 2026
Free plan · Developer tools · Developers
- AgentKey
One MCP connection and subscription that lets AI agents search the web, social sites and market data.
Since 2026
Subscription · Developer tools · Developers
- BGPScout
Routing data on tens of thousands of networks for ISPs and data centres, which you can query yourself or through AI assistants.
Since 2026
Free plan · Uptime and monitoring · Developers
- Callimachus
Builds one local, searchable index of your chats with Claude Code, Cursor, Codex and other coding agents.
Since 2026
Free plan · Developer tools · Developers
- Datadef
Generates editable architecture, ER and cloud diagrams from a description, SQL, Prisma, Terraform or a code repo.
Since 2025
Free plan · Design and images · Developers
- elmah.io
Logs errors from .NET and JavaScript apps, checks site uptime and scheduled jobs, and notifies your team in chat or email.
Free trial · Uptime and monitoring · Developers
- OpenGeocoding
A managed API for geocoding, address autocomplete and reverse lookups on open data, with a free monthly allowance.
Free plan · Developer tools · Developers
- Orthogonal
One account and key that lets AI agents call search, scraping and enrichment APIs from many providers, billed per call.
Since 2026
Pay as you go · Developer tools · Developers
- Radar
A visual interface for understanding live Kubernetes clusters, with an MCP server so AI agents can diagnose issues too.
Since 2026
Free plan · Uptime and monitoring · Developers
- ServBay
Mac and Windows app that sets up local web stacks, databases, domains and SSL, and lets coding agents run them over MCP.
Since 2025
Free plan · Developer tools · Developers