Plug-ins include Color 4D and File Toolkit for 4D.

LDAP4D implements the LDAP C API in a 4D sort of way. It allows 4d applications to perform LDAP client operations.

ObjectTools: A suite of OOP commands for managing an object within 4D. Active4D: 4D-based web development and deployment.

ASG is the developer and/or publisher of several 4D plug-ins.

Develops and markets 4th Quarter Accounting Solution (4Q) a multi-user accounting system for small to mid-sized businesses.

Committed Software is the publisher of SanityCheck, DataCheck, Method Maddness, AutoDoc, and 4D Version Control software tools. It also publishes "Training Guide: Getting Started 4D".

European portal for all 4th Dimension software and books.

The homepage of QPix, QMedia, QuickList, BLOB Manager, and QFree

Developer tools (MySQLConnect for, 4D, DBGateway for 4D, , EVX_AddressBook, EVX_SHELL, PostgreSQL for 4D)

Foresight Financials offers world-class accounting, management, sales/marketing and inventory modules in one, fully-integrated, single application system.

Shell for 4th Dimension to create custom menus environments. Built-in support for 4D Write and 4D Draw.

4D-based ImageBase used by art museums, universities, corporate archives, collectors, and artists. EmbARK provides a flexible template composed of more than 1,400 fields and 75 related files, integrating and networking all departments or functions in an institution into a single system.

Developers of 4DSqlite3, which connects 4D and sqlite

ITK transforms any 4D database into an Internet server or client.

ZipCenter adds ZIP Code lookups and GIS searches to any 4D database. ZipCenter is fast, easy to use, and simple to install.

Home of Rescue for 4D, Rescue for 4D Data, Emergency for 4D. Tools to repair 4D structure or data file.

Useful tools and plugins (eg RobotWatchdog, SimpleSQL)

Adds real time replicating/mirroring, syncing via TCP/IP to any 4D database. Allows remote users to sync with server. Allows 24/7 live backup.

Use ActiveX and OLE controls in your 4D application.

4D Agenda: scheduling plugin. 4D Column: for display of lists.

4th Dimension plug-in that allow to use Aladdin Systems Stuffit Engine directly from 4th Dimension programming language.

A tool to synchronize one 4D Database to another through TCP-IP

Design Assistant 2000 adds over 50 enhancements to the 4D method editor

Plugins and components: TECS SQL, TEC Query, Soundex, TEC TCP

Web Server 4D (WS4D), is a powerful 4D application that turns 4D, into a eCommerce server, and web server. WS4D is available in source code and has many features.