Open Source Software for OpenVMS

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This is a list of open source software for OpenVMS found on the Internet.

Name Description Language Architectures Author Year Link
SQLite 3 This is a native port of the SQLite database package to OpenVMS. It delivers the SQLite database to OpenVMS using the following native features:
  • Thread support using the tis library. This allows support for multi-threading without having to link against the pthreads RTL.
  • Direct file access. All files access is performed using the $QIO system services, rather than the C RTL or even RMS.
  • Native locking. All locking is handled using the OpenVMS distributed lock manager, allowing database access to be coordinated across cluster nodes (of all architectures).

Despite these OpenVMS-specific improvements the database file maintained by SQLite is still portable to other SQLite-based applications running on other systems.

C VAX, Alpha, Integrity Tim Sneddon 2013 Github
NetElf Run the client side of NetELF to download and execute a program over the network from a server. The server sends an arbitrary binary and command-line arguments. C Harry Roberts 2017 Github
NETLIB A library for writing TCP/IP based network applications. NETLIB provides a consistent, VMS-style interface for TCP/IP-based network programs, operating with all of the currently available TCP/IP packages available today for VMS (with one minor exception). In addition, NETLIB allows for flexibility in in the use of a TCP/IP package, by selecting the vendor-dependent library code at run-time, rather than link-time. C, Visual Basic VAX, Alpha Hunter Goatley Github
MX Email-exchange software C, C++ VAX, Alpha, Integrity Matthew Madison 1994 Version 6.0 on Github, featured in Freeware CD (V4.1, V4.2)
MMK/MAKE MMK is a "make" utility for VMS systems C, Macro VAX, Alpha, Integrity Matthew Madison 1992 V5.1 on Github, V3.9-9 featured in Freeware CD V80
UnQLite A VMS port of unqlite-db 1.1.6. UnQLite is a transactional NoSQL database in the same vein as SQLite. C Alpha, Integrity 2012 Github
WATCHER WATCHER is an idle terminal monitor. It logs out interactive users after a certain period of inactivity. WATCHER is fully configurable, allowing the system manager to define which terminals to watch, what measurements to use, and how long a terminal should be idle before getting zapped. It also includes provisions for preventing logouts or overriding inactivity settings based on any combination of username, UIC, terminal, privileges, image being run, held identifier, and time of day. BLISS VAX, Alpha, Integrity Matthew Madison 1994 V4.1 on Github, V2.9-1 in Freeware
DiskFree An implementation of the Linux df command (view disk usage) VAX, Alpha, Integrity (untested) Alan Fay Github
FTPD server An FTP server with support for UNIX file lists VAX, Alpha Alan Fay Github
MD5 sum A utility to print or check MD5 checksums (RFC 1321) VAX, Alpha Alan Fay Github
shasum A utility to print or check SHA checksums (FIPS PUB 180-2) VAX, Alpha Alan Fay Github
JRuby A port of JRuby to VMS (possibly frozen) Philippe Vouters 2012 Github
CMS-EXPORT A utility for OpenVMS to export CMS library content and revisions history. CMS is a version control system commonly used in OpenVMS environment (part of DECset). Valued for being efficient and time-proven, CMS also has its share of drawbacks -- lack of export options being one of these. cms-export utility allows export of a specified CMS library (or a set of library elements) into a file in git-fast-export format, which subsequently can be used to create a repository with an alternative version management system such as git, fossil etc. DCL VAX, Alpha Artur Shepilko 2018 Github
Ruby A port of Ruby for OpenVMS based on Ruby 1.8.2 (MRI). This work is in early alpha development stage and not suitable for release yet C, Ruby, HTML, Yacc Alpha Ben Armstrong Github
ES40 emulator A portable emulator for the ES40 Alpha C++ Linux Github repository maintained by Dmitry Kalinkin 1994 Github
PLIBSYS A cross-platform system C library with some helpful routines. It has zero third-party dependencies and uses only native system calls. C, C++ Alexander Saprykin Github, wiki
VMSComFiles Lorin Ricker's personal VMS command and auxiliary support files DCL Lorin Ricker Github
LIBVMS This package is a reimplementation of the OpenVMS system services for use in a POSIX environment. C Tim Sneddon 2013 Github
T4 monitor t4Monitor is a module for Windows and Linux that allows easy collection, preprocessing and reporting of generic OpenVMS' T4 compliant counters stored in Format-1 or Format-2 Comma Separated Values (CSV) files. Python J.M. Fernández 2014 Github
OpenSDL Open version of the OpenVMS Structure Definition Language (SDL). C, Yacc, Lex Jonathan Belanger 2007 Github
Adventure game A magic/exploration simulation game. Fortran VAX, Alpha Willie Crowther 1970s Github, Code from DECUS 1990 L&T SIG Tape, OpenVMS Freeware
Fixfilenames A simple program to fix filenames copied from OpenVMS system Go 2013 Github
SIMH VAX VMS A MicroVAX 3900 simulator Docker Github
GhostScript GhostScript for OpenVMS Alpha, Integrity Github repositpries maintained by Troy Makaro 2000 executables, sources
DBCHECK Very fast check the health of a RDB database DCL Github
JOe-Docs command procedsures OpenVMS command procedures and documentation:
  • MAIL.COM: send mail with attachments
  • RECYCLE.COM renewal of OPCOM file rename it by appending date to its name
  • adjusts DECwindows display
  • SNAPSHOTS.COM writes system information (devices, queues, licenses etc) to a predefined file
  • WriteToIndexedFile.COM writes to an indexed file
TAIL Performs a Variation of TYPE/TAIL on a File C Oleg Pyzin Github
C survival kit A set of useful functions, data structures, and macros aimed at allowing more expressive and reliable C code. Portability targets are OpenVMS and Linux. Github
NRPE daemon for OpenVMS A you to remotely execute Nagios plugins on OpenVMS machines. C VAX, Alpha Github
OpenVMS agent for uptime This is a technology preview of an upcoming up.time agent for monitoring OpenVMS systems to allow you to capture OS performance metrics such as:
  • CPU Usage (Both total usage, and a multi-cpu breakdown )
  • Memory Utilization
  • Network Usage
  • File System Capacity & Disk Utilization etc.
C Integrity Dan Branton Github
ODS2 File System readers ODS2 is a program to read VMS disk volumes written in VMS ODS2 format. Provides cut down DIRECTORY, COPY and SEARCH commands for VMS volumes on non-VMS systems. These can be used to find out what is on a VMS volume, and copy files onto the local file sytem. C Paul Nankervis, maintained on Github by Oleg Pyzin 1998 Github
OpenVMS migration utilities A utility that converts a OpenVMS Variable Length (VL) format file into a stream of bytes with additional line endings if required. C, bash Freddie Akeroyd 2016 Github
OpenBmx A Vagrantfile for a OpenVMS porting box using the alphavm emulator on a Ubuntu Linux box. Martin Borgman Github
Ruby for openvms webpage archive Web pages dedicated to Ruby for OpenVMS HTML Github
Convert OpenVMS text files to Unix Convert openvms textfiles into UNIX/DOS format C Andika Triwidada Github
Fabric VMS An addon for managing OpenVMS hosts with fabric. It wraps some of the methods available in Fabric enabling a user to execute commands on an OpenVMS (tested with OVMS 7.3 and 8.x releases) host. Python J.M. Fernández Github
Martineg's DCL scripts Miscellaneous DCL scripts: batch resubmit, LOGIN.COM, etc. DCL Martin Eggen Github
EPICS on OpenVMS Port of EPICS to OpenVMS C Clemens Wermelskirchen, maintained by Freddie Akeroyd Github
SYSUAF authentication for the Mosquito MQTT broker A simple plugin for the Mosquitto MQTT broker ( that provides the ability for the broker to authenticate users via standard OpenVMS means (namely checking the supplied credentials against those in SYSUAF). C Brett Cameron Github
C developer tools for OpenVMS This repo contains developer tools running on OpenVMS operating system C Rafiq Ahamed K 2017 Github
Net-SNMP 5.0.1 port to OpenVMS Net-SNMP v5.0.1 port to OpenVMS C Alpha Ported to OpenVMS by Stewart M. Smith for Siemens AG, released by Giles Burrows (Siemens AG) 2016 Github
Word count new utility. OpenVMS and *NIX OSes. Rework of wc C Oleg Pyzin based on original wc code Github
FileTypeDetector for OpenVMS files Java NIO.2 FileTypeDetector Implementations for OpenVMS Specific Files Java Mark Wickens Github
WASD_LDAP_AUTHAGENT A modification to WASD that allows you to authenticate users against external LDAP server WITHOUT corresponding SYSUAF records. C++, Perl Thomas Morstein Github
OpenVMS-RMS-DecBasic-Macro64 Try to create a OpenVMS project from memory using RMS-FDL-DECBasic on a OpenVMS system. (notes) Jason Loewecke Github
OMI A menu interpreter for OpenVMS, entirely written in DCL (OMI) Oscar van Eijk Github
StarLet File Transfer Utility This is a utility to transfering VMS's files over the TCP/IP network to a remote non-VMS hosts, a like the FTP or SFTP but with additional features: resuming broken transfers and generating FDL file to help restoring RMS's attributes on VMS hosts. C Ruslan Laishev Github
frontend_openvms OpenVMS Frontend Java, HTML, CSS Nathan (najowhit) Github
REST API component of OVMS REST API component of the OVMS platform. Javascript Nathan (najowhit) Github
CGP_PMAS CommuniGate Pro and PreciseMail Anti-Spam Gateway Integration on OpenVMS systems Perl Thomas Morstein Github
SDL A portable processor for Structure Definition Language (a child of the OpenVMS SDL) C Ruslan Laishev Github
MakeShare Creates a command procedure to link a shared imaged from an object library DCL Alpha and Integrity Steve Ives Github
OpenVMS-Oracle-Rdb-Toolset Ready to use procedures for a database administrator of Oracle Rdb databases on OpenVMS. Luc Allemeersch Github
vmsport Experiments in porting an OpenVMS Fortran / Decforms application to Linux and Gfortran Svante Lidman Github
OpenVMS-DCL-VSCODE-Lang-Support This extension is for DCL batch scripts. These are typically ran on OpenVMS systems, and are similar to BASH scripts TypeScript Tom Esparson based on work by Gleb Nikonorov Github
vmsbackup Program to read OpenVMS backup save sets on non-VMS machines C Freddie Akeroyd Github
OpenVMS-DCL-Sublime-Lang-Support This repository contains code necessary to make Sublime Text 3 aware of the 'DIGITAL Command Language' used by HP's OpenVMS operating system. Gleb Nikonorov Github
VmsCompatibility A collection of DBL subroutines and functions that implement, emulate or shim the functionality of various OpenVMS system service routines. DBL Kish Baley Github
VMShistory A collection of historical and descriptive documents about the History and Development of the VMS (OpenVMS) operating system Lorin Ricker Github
A utility to create a sqlite3 database of OpenVMS filesystems for analysis.
BatchFileConversion This is a Synergy/DE console application that will convert Workbench build files from Windows batch files to Unix script files or OpenVMS command files. Bash Unknown Github
curl-parallel Using CURL to parallel download large datafiles DCL taupirho Github
VMS ports Open Source and Freeware for OpenVMS collection by Bill Pedersen and others Github
GT.M for Alpha GT.M[tm] is a vetted industrial strength, transaction processing application platform consisting of a key-value database engine optimized for extreme transaction processing throughput & business continuity. Alpha Github
GNU for OpenVMS The GNV Project implements a port of the GNU utilities to OpenVMS with the intent of providing a framework for porting open source software to OpenVMS. A complementary SourceForge Project is VMS-Ports (, there are discussions of process and procedure there as well as regular conference calls with recordings to review progress and assess how to improve the environment. C John Malmberg and others Github
UsingJenkinsCI (wiki) Using Jenkins CI To Build OpenVMS Programs John Malmberg and others Github
OmniORB for OpenVMS omniORB is a CORBA object request broker for C++ and Python. It is very fast, robust, and standards-compliant. C++ Alpha Duncan Grisby Github
Gnulib Assist The Gnulib Assist project is a set of routines and header files needed to try to get GNULIB to build on OpenVMS / Ia64. John Malmberg Sourceforge
vmsperlkit Kitting procedures for Perl on OpenVMS Craig A. Berry Sourceforge
spop3 Pop3 server Ruslan R. Laishev Sourceforge
JNA JNA (Java Native Access) is a Java library published under LGPL which provides Java programs easy access to native shared libraries (RTL, System services on OpenVMS) without writing anything but Java code – no JNI or native code is required. Ported by Phillippe Vouters OpenVMS Free softwares
BORG calendar BORG Calendar is a personal information manager written in Java and published under GPL. It is a combination of calendar, ToDo list, address book and task/project tracking system. Ported by Thierry Uso OpenVMS Free softwares
DrJava DrJava is a lightweight Java IDE written in Java and published under the BSD license. It has the usual features such as editing with syntax coloring, automatic indentation, brace matching…, compiling, debugging, testing using JUnit… Ported by Thierry Uso OpenVMS Free softwares
FreeMind FreeMind is a mind mapping tool written in Java and published under GPL. FreeMind can be used to take notes, build a knowledge base or keep track of projects. Ported by Thierry Uso OpenVMS Free softwares
httping httping is a command line tool monitoring the response time of a Web server. It is written in C and published under GPL. Ported by Thierry Uso OpenVMS Free softwares
ImageJ ImageJ is a tool for image processing and analysis written in Java and placed in the public domain. ImageJ supports the usual formats (GIF, JPEG, XPM, PNG, TIFF…) and may be extended by plugins (more than 300 plugins are available). Ported by Thierry Uso OpenVMS Free softwares
iReport iReport is a data reporting tool written in Java and published under GPL. It offers a GUI to the report generator JasperReport. Reports can be built in several formats (PDF, HTML…) from data collected by JDBC… Ported by Jean-Yves Bourlès OpenVMS Free softwares
JabRef JabRef is a bibliography reference manager written in Java and published under GPL. It uses BibTeX as bibliography file format and has advanced features (BibTeX editor, search function, classification of entries, import/export of various formats, launch of external viewers…). Ported by Thierry Uso OpenVMS Free softwares
JavaRDP JavaRDP is a client for Windows Terminal Server written in Java and published under GPL. It is faster than VNC and can be used as a remote control tool. Ported by Thierry Uso OpenVMS Free softwares
Jetty Jetty is a Web server (HTTP server and servlet container) for static and dynamic content written in Java under Apache 2.0 license. Ported by Thierry Uso Jetty on OpenVMS Free softwares, Jetty 6 on OpenVMS Free softwares
JOnAS JOnAS is a J2EE application server published under LGPL. Ported by Jean-Yves Bourlès and Thierry Uso Jonas on OpenVMS Free softwares, Jonas5 on OpenVMS Free softwares
Jperf Jperf is a graphical frontend for Iperf written in Java. Iperf measures TCP and UDP performance (bandwidth, delay, jitter, loss). JPerf is released under a LGPL license. Ported by Thierry Uso OpenVMS Free softwares
JRuby JRuby is a Java implementation of the Ruby programming language, which means that the Ruby programs run atop the JVM. JRuby is released under a three-way CPL/GPL/LGPL license. Ported by Thierry Uso and Philippe Vouters OpenVMS Free softwares
Jsynoptic Jsynoptic is a tool dedicated to render data graphically. It is written in Java under LGPL. Data can come from different sources (files, network…) and can be static or dynamic. Ported by Thierry Uso OpenVMS Free softwares
JXplorer JXplorer is a LDAP client written in Java and published under a standard OSI-style open source licence. It allows to browse and modify any LDAP directory or any X500 directory with a LDAP interface. Ported by Thierry Uso OpenVMS Free softwares
JTrac JTrac is an issue-tracking web application written in Java under Apache License. The application is fast, easy to use and highly customizable for any kind of issues (bugs, tasks…). Ported by Thierry Uso OpenVMS Free softwares
libffi libffi is a library which allows a programmer to call any function specified by a call interface description at run-time and which is used by Java (JNA), Python (Ctypes) and Jruby (Jffi). libffi is written in C and published under a very liberal license. Ported by Philippe Vouters OpenVMS Free softwares
Lucane Lucane is a groupware platform written in Java and published under LGPL. It offers the usual groupware functions such as calendar, forum, instant messaging, file sharing… and may be easily extended by plugins. Lucane has an embedded database (hsqldb) but an external database (mySQL…) can be used instead of hsqldb. Users access Lucane by a Java client or a browser (IE, Mozilla…). Ported by Thierry Uso OpenVMS Free softwares
MibbleBrowser MibbleBrowser is a SNMP MIB browser written in Java and published under GPL. It uses the Mibble library as SMI parser and supports SNMPv1, SNMPv2c and SNMPv3. Ported by Thierry Uso OpenVMS Free softwares
muCommander muCommander is a file manager written in Java and published under GPL. It has also the additional features of (S)FTP, NFS, SMB client and ZIP, JAR, TAR archive brower. Ported by Thierry Uso OpenVMS Free softwares
NetWhistler NetWhistler is a network mapping and monitoring tool written in Java and published under GPL. It includes network discovery and diagnostic tools (ping, services monitoring, MIB browser, SNMP trap receiver console, MRTG console…). Ported by Thierry Uso OpenVMS Free softwares
Openfire Openfire is an instant messaging written in Java and published under GPL. It uses the XMPP (also called Jabber) protocol. Ported by Thierry Uso OpenVMS Free softwares
Scala Scala is a general purpose programming language published under a BSD-style license. It combines functional and object-oriented techniques, provides a number of powerful features (closures, actors…) and is fully interoperable with Java. Ported by Thierry Uso OpenVMS Free softwares
SQuirreL SQuirreL is a SQL client written in Java and published under LGPL. It allows to view the structure of a JDBC compliant database, browse the data in tables, issue SQL commands… Ported by Thierry Uso OpenVMS Free softwares
Superversion Superversion is a version control system written in Java and published under GPL. It is an alternative to free solutions (CVS, Subversion…) running on Unix or commercial solutions (CMS…) running on OpenVMS. The stable version (Superversion 1.2) is a standalone and single-user application. The following version (Superversion 2.0) will be a client-server and multi-user application. Ported by Thierry Uso OpenVMS Free softwares