NetPositive
NetPositive (often called Net+) is the default browser that comes with the Be Operating System (BeOS). It has partial support for JavaScript, but no Java or CSS support. NetPositive originally was the only web browser available for BeOS, but that is no longer the case. The last official version of NetPositive before the Be, Inc. bankruptcy was 2.2 /2.2.1 for US customers, but there also exists a 3.0d3 beta version, and a leaked 2.2.2 which changed from the RSA Encryption Engine to OpenSSL, possibly indicating that Be were cleaning the source of commercial code with an intent to open source, like the OpenTracker project.
Read more about Netpositive.