BSDlisenser

BSDlisenser is not an officially recognized license name in the open‑source licensing landscape. The term appears occasionally as a misspelling or informal shorthand for the BSD family of permissive licenses, or as a conflation of 'BSD' with 'license'. There is no formal specification or authoritative document published under that exact name.

The BSD licenses originated at the University of California, Berkeley, and are a family of permissive free software licenses. They grant broad rights to use, modify, and redistribute software with minimal restrictions. Common requirements include preserving copyright notices and warranty disclaimers; some variants impose additional conditions such as attribution in the documentation or advertising materials. They do not require derivative works to be licensed under the same terms.

Key variants include the 2-clause BSD license (FreeBSD‑style) and the 3-clause BSD license (the 'advertising clause' removed). A historical 4-clause version included an advertising clause. Modern projects frequently choose the 2‑ or 3‑clause form because the advertising clause is considered burdensome.

BSD licenses are widely used in operating systems and software libraries and are valued for their compatibility with proprietary software. They are typically contrasted with copyleft licenses (for example, the GNU GPL), which impose more extensive redistribution obligations.

If you encounter the term 'BSDlisenser', verify the exact license referenced in project documentation, or consult the BSD‑family licenses (2‑clause, 3‑clause, 4‑clause) to understand the applicable terms.