The VESPA infrastructure makes use of various tools often maintained by external developers, most of which predate VESPA.

The most closely related tools are:

All of which benefit from direct inclusion in the VESPA activity.

VESPA issued requests for specific developments to other VO-compliant tools (sometimes in the past):

In addition to these, an effort is made to connect or adapt existing tools for use with VESPA and the VO.
These currently include:

Evolution of SAMP

SAMP connexions over https used to be blocked by most browsers, but this is no longer true - depending on the browser in use.

See this page for evolutions and tests: