What is the best alternative to SendLetter?

The top-rated alternatives to SendLetter in the Developer Tools category include Openapi MCP Server, Andrea9293 MCP, MCP Server Docker. These servers offer complementary or alternative capabilities depending on your deployment stack and authentication requirements.

How do SendLetter alternatives differ in installation and runtime?

SendLetter and its alternatives vary by runtime requirement (Node.js/npx, Python/uvx, Docker, or remote HTTP/SSE endpoints). Check the specification comparison table above to verify command requirements before installing.

Are alternatives to SendLetter free and open source?

Most MCP servers listed on AllMCPs are open source tools under MIT or Apache licenses that you can self-host or run locally with Claude Desktop, Cursor, VS Code, or Windsurf.

How do I side-by-side compare SendLetter with a specific alternative?

Click the "Compare side-by-side →" button on any alternative card to see an in-depth comparison matrix covering feature lists, stars, npm downloads, install configurations, and schema specifications.

Developer Tools• MCP Alternatives Guide

Best Alternatives to SendLetter

Looking for an alternative to SendLetter? Whether you need a different runtime environment, custom authentication support, or alternative API integrations in the Developer Tools ecosystem, we have cataloged and compared the top alternative MCP servers below.

Browse all Developer Tools servers →View SendLetter Specs →

Target Reference Server

SendLetter Overview

Send real, printed letters by post across Europe. Requires a free account; quote before sending.

Specification Matrix: SendLetter vs Alternatives

Server Name	Runtime	Auth	Pricing	GitHub Stars	Downloads	Action
SendLetter (Target)	—	Free/None	Free	—	—	Current
Openapi MCP Server	Remote (SSE)	No auth required	Free	904	—	Compare →
Andrea9293 MCP	npx	Free/None	Free	344	—	Compare →
MCP Server Docker	uvx	No auth required	Free	744	—	Compare →
Shadcn Ui MCP Server	npx	API key	Free	2,999	—	Compare →
Next Devtools MCP	npx	No auth required	Free	824	—	Compare →
UI5 MCP Server	npx	Free/None	Free	100	—	Compare →
MCP Graphql	npx	No auth required	Free	408	—	Compare →
Formio MCP	npx	Free/None	Free	7	—	Compare →
Docker MCP	uvx	No auth required	Free	503	—	Compare →
Exogram Authority Runtime	npx	Free/None	Free	—	—	Compare →
MCP Probe	npx	Free/None	Free	2	—	Compare →
Pipedream	Remote (SSE)	API key	Freemium	11,703	—	Compare →

Detailed Evaluation of SendLetter Alternatives

Openapi MCP Server

Runtime: Remote (SSE)

Explore OpenAPI v3 specifications, summarize APIs, and inspect the endpoints needed for a task through MCP.

Key Features:

OpenAPI specification discovery

Plain-language API summaries

Operation-level endpoint details

3 0 904

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Andrea9293 MCP

Runtime: npx

Local-first document management and semantic search for AI coding agents

2 0 344

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MCP Server Docker

Runtime: uvx

Manage Docker containers, images, networks, and volumes through MCP tools, prompts, and resource templates.

Key Features:

Natural-language container composition prompt

Container lifecycle management

Image build, pull, push, and removal

3 0 744

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Shadcn Ui MCP Server

Runtime: npx

Provides AI clients with shadcn/ui v4 components, blocks, demos, metadata, and multi-framework source access.

Key Features:

React, Svelte, Vue, and React Native implementations

Component source, demos, blocks, and metadata

GitHub-backed retrieval with caching

3 0 2,999

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Next Devtools MCP

Runtime: npx

Verified

Connects coding agents to running Next.js 16+ dev servers for runtime errors, routes, logs, docs, and browser automation guidance.

Key Features:

Discovers running Next.js development servers

Proxies runtime errors, routes, logs, and metadata

Resolves Server Action IDs to source files

5 0 824

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UI5 MCP Server

Runtime: npx

MCP server for UI5 application development

2 0 100

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MCP Graphql

Runtime: npx

Connects MCP clients to GraphQL endpoints for schema discovery and query execution, with mutations disabled by default.

Key Features:

GraphQL schema introspection

GraphQL query execution

Schema resource exposure

3 0 408

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Formio MCP

Runtime: npx

Create and manage Form.io forms, resources, actions, roles, and projects from your AI agent.

2 0 7

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Docker MCP

Runtime: uvx

Manage Docker containers, compose stacks, logs, and status through MCP tools.

Key Features:

Create standalone containers

Deploy Docker Compose stacks

Retrieve container logs

3 0 503

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Exogram Authority Runtime

Runtime: npx

Model Context Protocol server for the Exogram Authority Runtime.

2 0

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MCP Probe

Runtime: npx

Inspect and score any MCP server 0-100 on publishability, schema and protocol before publish.

2 0 2

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Pipedream

Runtime: Remote (SSE)

Connects AI agents to Pipedream’s catalog of APIs and prebuilt tools for app integrations and workflow automation.

Key Features:

Access to 2,500 APIs and 8,000+ prebuilt tools

Event-driven workflow triggers

Prebuilt actions across connected applications

5 0 11,703

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Best Alternatives to SendLetter

SendLetter Overview

Specification Matrix: SendLetter vs Alternatives

Detailed Evaluation of SendLetter Alternatives

Frequently Asked Questions: SendLetter Alternatives