Bitrix24 Open Source ✓

is often categorized alongside "open-source" platforms, it is technically a proprietary system with a self-hosted (on-premise) edition

Get a guide on the On-Premise version on your own server? Bitrix24 migration guide: Cloud to On-premise bitrix24 open source

is unique in the CRM market because it offers a Self-Hosted (on-premise) version that provides access to the open source code is often categorized alongside "open-source" platforms

: The vast volume of features and administrative settings can be overwhelming, often requiring structured onboarding for new users [12]. bitrix24 open source