> For the complete documentation index, see [llms.txt](https://akropolis.gitbook.io/akropolis/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://akropolis.gitbook.io/akropolis/developer-documentation/open-source-development.md).

# Open Source Development

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[Pensify](/akropolis/developer-documentation/open-source-development/pensify.md)
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[C2FC](/akropolis/developer-documentation/open-source-development/c2fc.md)
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[AkropolisOS](/akropolis/developer-documentation/open-source-development/akropolisos.md)
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[Sparta](/akropolis/developer-documentation/open-source-development/sparta.md)
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[Delphi](/akropolis/developer-documentation/open-source-development/delphi.md)
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[Polkahub](/akropolis/developer-documentation/open-source-development/polkahub.md)
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[Ethereum <-> Substrate bridge](/akropolis/developer-documentation/open-source-development/ethereum-less-than-greater-than-substrate-bridge.md)
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[Web3 Wallet Kit](/akropolis/developer-documentation/open-source-development/web3-wallet-kit.md)
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[Substrate Staking portal](/akropolis/developer-documentation/open-source-development/substrate-staking-portal.md)
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