Primer3 0.4.0 Fixed -

The 0.4.0 series (including the popular 0.4.0 and subsequent patches) represented a major codebase modernization. Previous versions (like v1.1.4) were functional but aging. Here is why the 0.4.0 release is critical for modern researchers:

: Can design hybridization probes (internal oligos) alongside primer pairs. primer3 0.4.0

Unlike modern package managers (conda, apt), primer3 0.4.0 requires compilation from source. Download the tarball from the official SourceForge archive (or legacy GitHub mirror): primer3 0.4.0