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ChainMemory VS HackMD

Compare ChainMemory VS HackMD and see what are their differences

ChainMemory

Portable, verifiable memory for AI agents — works across ChatGPT, Claude, Gemini and any MCP client

Rating
0 reviews
Pricing
Free
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Alternatives Is it good?
HackMD

Fast and flexible, real-time collaborative markdown, inspired by Hackpad.

Rating
0 reviews
Promote on VibeVoted
Alternatives Is it good?
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Which is more popular?

Based on our record, HackMD seems to be more popular. It has been mentioned 76 times since March 2021.

social mentions
0 vs 76
AI popularity
100% vs 0%
alternatives listed
40 vs 178

Base details

Website, pricing, platforms and company facts side by side.

ChainMemory
HackMD
Website chainmemory.ai hackmd.io
Pricing
Free Official pricing
Official pricing
Listed in
AI Memory AI Developer Tools Productivity API Tools Memory +3
Task Management Project Management Productivity Markdown Editor +1

About ChainMemory and HackMD

In their own words, as submitted to SaaSHub.

ChainMemory
HackMD

ChainMemory gives your AI agents persistent memory that belongs to YOU — not to a single vendor. Save a memory in ChatGPT, recall it in Claude or Gemini. Available via Chrome extension, MCP server (npm), or REST API. Every memory gets a cryptographic fingerprint and project states are anchored...

Read more about ChainMemory

No description of HackMD yet.

Features and specs

What each product offers, as listed by its team.

ChainMemory 8 features
HackMD 5 features
  • Cross-model memory
    Save in ChatGPT, recall in Claude, Gemini, Perplexity or Copilot
  • MCP Server
    Native integration with Claude Desktop, Cursor and any MCP client (npm)
  • Chrome Extension
    One-click save and context injection on any AI chat
  • Project Brain
    Consolidates memories into structured state: decisions, milestones, risks
  • Cryptographic Verification
    Merkle proofs + on-chain anchoring — independently verifiable
  • REST API
    Full backend control with per-project API keys
  • Semantic Search
    Fast semantic recall across all your memories
  • Multi-Agent Support
    Claude, Cursor and GPT share one project state with attribution
  • Collaboration
    HackMD offers real-time collaborative editing, which allows multiple users to work on the same document simultaneously. This feature enhances teamwork and productivity, especially for remote teams.
  • Markdown Support
    HackMD is built around Markdown, providing a simple yet powerful syntax for formatting documents. Markdown compatibility makes it easy to create well-structured content with minimal effort.
  • Version Control
    The platform includes version history, allowing users to track changes, revert to previous versions, and compare different iterations. This feature ensures that work is not lost and can be systematically reviewed.
  • Integration
    HackMD integrates with popular platforms like GitHub, GitLab, and Dropbox, allowing for seamless workflow integration. This makes it easy to incorporate HackMD into existing development and project management processes.
  • Accessibility
    HackMD is a web-based tool, meaning it can be accessed from any device with an internet connection. This ensures that users can collaborate and edit documents from different locations and devices.

Possible disadvantages

  • Limited Offline Support
    Since HackMD is primarily a web-based tool, it offers limited functionalities when offline. Users may face challenges accessing and editing documents without an internet connection.
  • Subscription Model
    While HackMD offers a free tier, advanced features and greater collaboration capacities are locked behind a subscription model. This could be a disadvantage for users and small teams with limited budgets.
  • Learning Curve
    Users unfamiliar with Markdown or collaborative editing tools may have a learning curve to overcome. This could affect initial productivity and user experience.
  • Data Privacy
    As a cloud-based service, users may have concerns about data privacy and security. Sensitive information stored on the platform could potentially be accessed by third parties or become vulnerable to data breaches.
  • Performance Issues
    Under heavy usage or with large documents, some users might experience occasional performance issues such as lag or slow syncing. This can disrupt the workflow and collaborative efforts.

Analysis

An editorial look at what each product does well and who it suits.

ChainMemory
HackMD

Overall verdict

  • I don't have verified information about ChainMemory (chainmemory.ai), so I can't confirm whether it's good or reliable. I don't want to fabricate details about a product I have no factual basis for—please verify through official sources, user reviews, and independent research before drawing conclusions.

Why this product is good

  • I lack verified data on this specific product's features, performance, or user feedback
  • No independent reviews or benchmarks are available to me for this service
  • I cannot confirm the legitimacy, pricing, or claims made by chainmemory.ai
  • Making up details would be misleading rather than helpful

Recommended for

  • Anyone considering this product should first check the official website for documentation and pricing
  • Look for third-party reviews, community discussions, or case studies before committing
  • Consider reaching out to the company directly for demos, references, or trial access
  • Consult recent tech news or comparison articles if this is a newer or niche tool

Overall verdict

  • Overall, HackMD is a strong choice for those looking for an effective and flexible markdown editor with robust collaboration features. Its convenience, ease of use, and extensive features make it a good option for both personal and professional use.

Why this product is good

  • HackMD is popular because it offers a collaborative markdown editing environment that's particularly useful for teams and individuals who need to work on documentation, notes, or any kind of markdown-based content. It allows real-time collaboration, version control, and easy sharing, making it ideal for productivity. Its interface is user-friendly, and it supports a variety of integrations with tools like GitHub, Google Drive, and Dropbox. This flexibility and the ability to seamlessly work across different platforms make HackMD a valuable tool for many users.

Recommended for

  • Teams needing real-time collaboration on documents
  • Developers working on project documentation
  • Educators and students for note-taking and sharing
  • Writers preferring markdown for content creation
  • Anyone looking for a cloud-based markdown editor with integrations

Videos

Walkthroughs and reviews on video.

ChainMemory 0 videos + Add
HackMD 3 videos + Add

No ChainMemory videos yet. You could help us improve this page by suggesting one.

hackmd.io opensource application review

More videos

  • - Techstars Paris 2018 Demo Day - HackMD pitch
  • - Screencast-Tutorial zu HackMD

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
ChainMemory
HackMD
100% 100%
AI
0% 0%
0% 0%
Task Management
100% 100%
100% 100%
Developer Tools
0% 0%
0% 0%
Productivity
100% 100%

User comments

Share your experience with using ChainMemory and HackMD. For example, how are they different and which one is better?

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Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

ChainMemory 0 mentions
HackMD 76 mentions

Tracking ChainMemory since Jul 2026.

  • Which Markdown editor to choose
    Live preview. StackEdit, Dillinger, Markdown Live Preview, HackMD, and VS Code with its preview pane open. Toast UI Editor ships both modes and lets you switch. - Source: dev.to / 3 months ago
  • Axios Compromised on NPM – Malicious Versions Drop Remote Access Trojan
    Many of the suggestions in this thread (min-release, ignore script) are defenses for the consumers. I've been working on Proof of Resilience, a set of 4 metrics for OSS, and using that as a scoring oracle for what to fund. Popularity... - Source: Hacker News / 8 months ago
  • A decentralized peer-to-peer messaging application that operates over Bluetooth
    Bluetooth works most reliably across all devices (within its limited range), but all these p2p apps are indeed moving towards multi-transport support to diversify and widen the connectivity grid: https://hackmd.io/@grjte/bitchat-wifi-aware. - Source: Hacker News / 10 months ago

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Alternatives to ChainMemory and HackMD

When comparing ChainMemory and HackMD, you can also consider the following products.

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