101 is a business management platform designed for construction companies and other teams coordinating projects, schedules, documents, and approvals. It brings project planning, estimates, work and materials tracking, financial records, reporting, and company analytics together in one system. Users can manage price lists, import them from Excel, create cost calculations, schedule work with Gantt charts, assign tasks, and compare project plans with actual results. The platform also supports customer approvals, team and contractor records, sales pipelines, shared files and photo reports, acceptance documents, and customer-facing project reports.

101 includes AI features, such as an assistant, voice interaction, and connections for AI tools through its ChatGPT MCP plugin; APIs and integrations with amoCRM, Bitrix24, and Yandex Disk are also available. The service can be accessed through a web version and mobile app platforms including the App Store, Google Play, RuStore, GetApps, and AppGallery. Its subscription plans range from free core tools to paid options with expanded collaboration, analytics, document branding, and API capabilities.