Advanced Network Systems, Inc.
- WebiX -- Java 2 Enterprise Edition (J2EE) web application server with connection, file, and database pooling; pre-written business Enterprise Java Beans; and XML/XSLT processing. VPLUS+ -- converts existing VPLUS forms into Java Clients which launch VPLU
- http://www.advnetsys.com

Robust Systems, Inc.
- VB-View client-server front end for VPLUS applications. WebAssist/3000.
- http://www.robustsystems.com

Leetech
- DOOR (Data Object Open Replication), AIM (Application Intelligence Middleware).
- http://www.leetech.com

E-Mail, Inc.
- SMTP-X3000, SMAPIweb.
- http://www.emailinc.com

Quintessential School Systems
- Application developer offering its client-server toolkit and web server solutions. QSDK toolkit, a subroutine library for HP3000 programmers who wish to develop network applications for their HP3000 without having to learn network programming. QWEBS, a
- http://www.qss.com/Sales/Qsdk/pqsdk.htm

3k Associates
- Internet consultants and integrators offering HP 3000 products including: NetMail/3000 - SMTP/MIME/POP electronic mail; DeskLink/3000 - SMTP/MIME gateway for HPDesk/HPOpenDesk; GopherServer; and API/3000 - CMC-compatible e-mail.
- http://www.3k.com