There was a download of HTTPTunnel 1.2.1 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The actual developer of the free program is Sebastian Weber.
HTTPTunnel lies within Internet & Network Tools, more precisely Network Tools. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
The latest version of the software is supported on PCs running Windows XP/XP Professional/Vista/7/8/10/11, 32-bit. The most popular version among HTTPTunnel users is 1.2. Commonly, this program's installer has the following filenames: httptunnel_client.exe and httptunnel_server.exe etc.
From the developer:
HTTPTunnel is a tunneling software that can tunnel network connections through restrictive HTTP proxies over pure HTTP "GET" and "POST" requests.
The client that resides behind the firewall and accepts network connections on ports that will either be mapped to a specific remote target server/port (portmapping) or will act as a SOCKS (v4 and v5) proxy. The SOCKS authentication source can be a fixed user list, an LDAP or MySQL directory.
You may want to check out more software, such as Universal HTTP Tunnel Client, which might be similar to HTTPTunnel.