| `monero-blockchain-prune` | Prune existing local blockchain. This saves 2/3 of disk space (85GB -> 28GB as of June 2020). This is preferable over `monerod --prune-blockchain` which only logically releases space inside the file while the file remains large. The `monero-blockchain-prune` creates a shrinked copy of the blockchain file. See [tutorial1](https://monero.stackexchange.com/questions/11454/how-do-i-utilize-blockchain-pruning-in-the-gui-monero-wallet-gui), [tutorial2](https://www.publish0x.com/solareclipse/howto-prune-shrink-the-database-of-the-monero-blockchain-on-xpgwjx).
| `monero-gen-ssl-cert` | Generate 4096 bit RSA private key and self signed TLS certificate for use with `monerod` RPC interface. See the [pull request](https://github.com/monero-project/monero/pull/5495).
| `monero-gen-trusted-multisig` | Tool to generate a set of multisig wallets. <br/>See chapter on [multisignatures](/multisignature).
| `monero-blockchain-mark-spent-outputs` | Advanced tool to mitigate potential privacy issues related to Monero forks. You normally shouldn't be concerned with that.<br/>See the [commit](https://github.com/monero-project/monero/commit/df6fad4c627b99a5c3e2b91b69a0a1cc77c4be14#diff-0410fba131d9a7024ed4dcf9fb4a4e07) and [pull request](https://github.com/monero-project/monero/pull/3322).
| `monero-blockchain-prune-known-spent-data` | Previous limited pruning tool to prune select "known spent" transaction outputs (from the before RCT era). Nowadays prefer `monero-blockchain-prune`. This only saves ~200 MB. See the [commit](https://github.com/monero-project/monero/commit/d855f9bb92dbfab707a0e37505906366de818a14).
| `monero-blockchain-usage` | Advanced tool to mitigate potential privacy issues related to Monero forks. You normally shouldn't be concerned with that.<br/>See the [commit](https://github.com/monero-project/monero/commit/0590f62ab64cf023d397b995072035986931a6b4) and the [pull request](https://github.com/monero-project/monero/pull/3322).
| `monero-blockchain-ancestry` | Advanced research tool to learn ancestors of a transaction, block or chain. Irrelevant for normal users. See this [pull request](https://github.com/monero-project/monero/pull/4147/files).
| `monero-blockchain-depth` | Advanced research tool to learn depth of a transaction, block or chain. Irrelevant for normal users. See this [commit](https://github.com/monero-project/monero/commit/289880d82d3cb206a2cf4ae67d2deacdab43d4f4#diff-34abcc1a0c100efb273bf36fb95ebfa0).