mithril VS hydra

Compare mithril vs hydra and see what are their differences.


Stake-based threshold multi-signatures protocol (by input-output-hk)


Implementation of the Hydra Head protocol (by input-output-hk)
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mithril hydra
3 35
82 213
- 6.6%
9.7 9.9
6 days ago 7 days ago
Rust Haskell
Apache License 2.0 Apache License 2.0
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.


Posts with mentions or reviews of mithril. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-11-25.
  • Weekly development report as of 2022-11-25 - Iohk
    3 projects | /r/cardano | 25 Nov 2022
    The Mithril team released a new distribution2246.1. They upgraded the Mithril test networks infrastructure to make them more resilient and kept on refining the release process fixing some minor bugs. The team also worked on the second phase of implementing the automatic store upgrade of the signer and aggregator nodes.


Posts with mentions or reviews of hydra. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-05-07.
  • Why is eth the 2nd biggest crypto when it's functions are so outdated and costly?
    3 projects | /r/CryptoCurrency | 7 May 2023
  • My thoughts after studying ADA, DOT, ETH
    2 projects | /r/CryptoCurrency | 6 Apr 2023
    So many wrong statements made in your comment it's pretty wild. My original comment was to highlight some differences between Cardano and Ethereum in regards to how they operate rather than to decide which one was better. Regardless, you've decided it was complete non-sense and gone on a tangent because I state both tx fee models have their pros and cons? Lol. If you think a viable solution is to have insane gas fees on the L1 then we fundamentally disagree and crypto will never find real adoption. You've blurted so many things idk where to start but to sort of sum it up is that Cardano has scaled and is still scaling with things like input endorsers and hydra which is actually just about ready to start using: This also tells me your information about what's happening is outdated. Also I know exactly what throughput is, my point was that the metric doesn't capture the full picture for different blockchains capabilities.. We can go all day but you clearly have something against Cardano, I'm happy to have a genuine discussion but the intent on bashing is clear here as this was unprovoked.
  • Cardano 2023 upcoming developments
    2 projects | /r/cardano | 27 Mar 2023
    Hydra, a L2 solution using isomorphic state channels. Caveat: This is NOT an easy fix that can simply scale all Cardano dapps, it remains to be seen what parts of Cardano can actually be scaled by Hydra. This currently is a bit complicated. Sundaeswap is experimenting with Hydra, but Axo devs do not think Hydra is good for scaling DEXs...
  • Cardano weekly development report as of 2023-02-24 Olga Hryniuk @
    5 projects | /r/cardano | 24 Feb 2023
    The Hydra team completed work on a different way of dealing with contests during the contestation period. These will now always push the deadline out, making contestation periods easier to pick depending on the network a head runs on. They also added an important acceptance test and completed internal refactoring of the protocol logic, making future changes easier to implement.
  • I'm confused about the Hydra Head protocol capabilities for some use cases like P2P bots
    2 projects | /r/cardano | 15 Feb 2023
    I'm thinking about this for some time, about having a bot for P2P exchange much like P2P lightning bot but for Cardano and no, necessarily implementing a full-blown "lightning network", but I'm confused about the state of the Hydra Head Protocol and its capabilities for this particular use case.
  • Weekly development report as of 2022-11-25 - Iohk
    3 projects | /r/cardano | 25 Nov 2022
    The Hydra team released version0.8.1, which includes several fixes and an extension of the persistence (introduced by version 0.8.0) of replaying server outputs to make clients like the hydra-tui aware of the latest hydra-node state. The team also worked on the specification and closing gaps in the on-chain scripts, collaborated with the education team on a Hydra tutorial, and renamed the repository from hydra-poc to `hydra`.
  • Cardano Founder: Hydra Is ‘Everything Lightning Wanted To Be When It Grows Up’
    2 projects | /r/CryptoCurrency | 24 Sep 2022
    Well it does exist
    2 projects | /r/CryptoCurrency | 24 Sep 2022
  • Cardano (ADA) Ranks 4th in Global Staking Value
    2 projects | /r/CryptoCurrency | 28 Mar 2022
    You can follow all the development on GitHub. You can actually set one up and connect it to testnet yourself. It has been successfully used on testnet. There’s even a user’s manual, for your convenience.
  • Charles talking about FUD surrounding Hydra
    2 projects | /r/cardano | 24 Feb 2022
    It seems it's here:

What are some alternatives?

When comparing mithril and hydra you can also consider the following projects:

eth-gasnow-extention - GasNow extension for browser

ergo - Ergo protocol description & reference client implementation

cardano-node - The core component that is used to participate in a Cardano decentralised blockchain.

l2beat - L2BEAT is an analytics and research website about Ethereum layer two (L2) scaling solutions.

adalite - A lightweight web wallet for Cardano cryptocurrency with Trezor, Ledger and BitBox02 support. Please note that the only valid domain for our wallet is

consensus-specs - Ethereum Proof-of-Stake Consensus Specifications

hydra-sim - Simulations for the Hydra protocol

rust-cardano-ouroboros-network - Rust implementation of networking layer for the Ouroboros blockchain protocol using Tokio framework.