At the weekend I decided to look for open-source implementations of domestic cryptographic standards. First of all, they were interested in new ones: Stribog hash function (GOST R 34.11-2012), Grasshopper (GOST R 34.12-2015) and EDS (GOST R 34.10-2012 or 2001 (without 512-bit)). The old GOST 28147-89 was not specifically sought, since to find its implementation there were no problems for a long time.
So let's see what happened. Immediately I warn you that I did not check the correctness of implementations.

Grasshopper

• Official implementation of TC 26
• The implementation of Markku Saarinen (not optimized)
• The implementation of Roman Oleynikov (not optimized)
• Implementation optimized for 8/16/32/64/128 bit architectures
• Implementation of Eric Filiol (not optimized)
• A KeePass plugin that implements Grasshopper
• JS implementation of the WebCrypto project
• Assembly implementation (UPD by @omegicus)
• C ++ implementation
• Implementation in Python by @NeverWalkAloner
• Implementing on Go by @ stargrave2
• Another Go implementation
• Python implementation on @ stargrave2
• Implementation on C99 with SSE2 optimization by @aaprelev

Stribog

• The famous implementation of Degtyarev
• Calculation of Stribog hash sums on Qt (based on Degtyarevskaya)
• Implementing Kazimirov (C and sage)
• Assembler by @omegicus (not optimized)
• Implementation in libgcrypt
• Java implementation
• Pure C
• Implementation in Gostcrypt - fork Truecrypt
• PHP implementation of Kolesnikov (development of Degtyarevskaya)
• Cryptocurrency SibCoin on Stribog (Cryptocurrency on Stribog, Karl!)
• JS implementation of the WebCrypto project
• Python implementation
• C ++ implementation
• LibreSSL
• Go implementation
• Optimized by @ Ivan_83 + HMAC
• Openssl engine

Signature

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• JS implementation of the WebCrypto project
• Python implementation
• Openssl
• Implementation in libgcrypt
• Implementation from @ Ivan_83
• Implementation from @NeverWalkAloner
• LibreSSL
• Go implementation

If you have indicated not all - write add.