In September 2019, Sandboxie version 5.31.4 was released under a freeware license 'with plans to transition it to an open source tool'. Windows XP SP3 and Windows Vista SP2 were supported up to version 5.22, after which their support was dropped. Version 4.02 introduced support for Windows 64-bit with the exception of Windows XP Professional 圆4 Edition, which was never supported. Invincea posted an assurance in Sandboxie's website that for the time being Sandboxie's development and support would continue as normal. In February 2017, Sophos announced the acquisition of Invincea. The original developer Ronen Tzur further announced he would no longer be involved with the program. In December 2013, Invincea announced the acquisition of Sandboxie. Over time, the program was expanded to support other web browsers and eventually, arbitrary apps.

Sandboxie was initially released in 2004 as a tool for sandboxing Internet Explorer.

The day after the Sophos announcement, a third-party developer known as David Xanatos forked the open-source project and expanded it later with Sandboxie Plus.

Īfter various ownership transitions ( Sophos acquired Invincea which acquired Sandboxie from the original author, Ronen Tzur), Sophos eventually dropped support and released the code as open-source. This virtual environment allows for controlled testing of untrusted programs and web surfing. It is a sandboxing solution that creates an isolated operating environment in which applications can run without permanently modifying the local system. Sandboxie is an open-source OS-level virtualization solution for Microsoft Windows.

Plus: Custom-made, Open-core model, Nagware.

Free browser sandbox