Belov Software - Shareware utilities for Btrieve.
Classic Software, Inc. - Software components and programming tools for Btrieve, including the Classic Data Control for Btrieve and DDF Maker, a utility for editing Btrieve data dictionaries.
Nelson Software Solutions - btsearch - Export and import Btrieve data including utilities to edit DDF files or to analyze your existing files or create them.
PM Technologies, Inc. - Provider of P.Crusher, a compression utility for Btrieve and Pervasive SQL databases.