* [muchsync](http://www.muchsync.org/) - replicate and synchronize
your notmuch database (mail and tags) across machines
+* [interimap](https://guilhem.org/interimap/) - Fast bidirectional
+ synchronization between IMAP servers.
+
* [lieer](https://github.com/gauteh/lieer) - Fast email-fetching and two-way tag
synchronization between notmuch and GMail (Note that lieer was formerly known
as gmailieer.)
<td>?</td>
<td>work in progress</td>
</tr>
+ <tr>
+ <td><a href="https://guilhem.org/interimap/">interimap</a></td>
+ <td>yes</td>
+ <td>IMAP4</td>
+ <td>dovecot</td>
+ <td>Fast bidirectional synchronization between IMAP servers</td>
+ </tr>
<tr>
<td><a href="https://github.com/gauteh/lieer">lieer</a></td>
<td>tags: yes, mail: fetch</td>