https://github.com/horazont/xmpp-http-upload – на Python

https://github.com/weiss/ngx_http_upload – как Nginx-модуль

https://github.com/guusdk/httpfileuploadcomponent – с проверкой файлов на вирусы

https://github.com/mathiasertl/django-xmpp-http-upload

https://github.com/toha/go-xmpp-http-upload – на Go