- Windows: secondlife.exe (formerly called newview.exe until version 1.6)
- Linux: secondlife.bin (called from a shell script named secondlife.)
Although the client does not cost anything to purchase, it may not be downloaded without a Second Life account. For new users, the link to download the program appears at the end of the registration process. For existing users, the program may be downloaded from the "Community: Downloads" section of the website, which requires a login.