Not only Zmodem was cool, it was also open source back then, and very easy to integrate into your program.<p>In fact, little known fact, it&#x27;s still very useful <i>today</i>; if you ssh into a box that has it installed, and you have it installed locally, you can quickly send yourself back a file with it, across the current connection...<p>Just to &#x27;sz &lt;file&gt;&#x27; on the remote side, and do &lt;return&gt;&lt;tilde&gt;|rz&lt;return&gt;
to tell you ssh client to start &#x27;rz&#x27; locally and zoom, zmodem the file over.<p>Works the other way too...