Free vshell server software for linux

The Email Server is designed to provide services offered by its commercial email products, such as IMAP/POP services, Web-Based Email Interface and Administration, Mail Filtering, Spam Blocking and Directory-Based Authentication and Addressbooks.
RH Email Server is fine for businesses and organizations of all sizes. Multiple commercial and educational installations are already using this project. The largest current user load that has been reported is 7,000 + users.
Interoperability between RHSD projects such as the RHSD Email Server and the RHSD Domain Controller will allow for use of Single-Sign On. RHSD also utilizes IETF Standardized projects and therefore will be compatible with any Directory system compatible with LDAP v.3.
Main features:
- Web-Based Email Client for Users
- LDAP Directory / Authentication
- Mail Filtering
- Addressbooks
- Web-Based Administration Tools
- Role-Based Tool Delegation
- Spam Blocking

Tail server allows you to export the output of a "tail -f" command of a log file to a TCP port, allowing it to be viewed remotely with telnet. Tail Server provides a regular expression filter to include or exclude output view.
In several circumstances the need to access on remote time-varying log file leads to write some simple scripts.
These files generated by applications like syslog, http, news, etc. are often located on different machines.
System Administrator usually logon on remote system then type:
# tail -f filename
Tail Server offers the possibliy to map on Tcp/Ip port the output of "# tail -f filename" without (each time) logging on remote systems.
Also offers output regular expressions filter in order to include or exclude strings.
Enhancements:
- Server Log File has been implemented.

The Ming Server generates Web pages statically or dynamically. As a local executable, it generates a static site from a directory tree of simple text files.
Installed in cgi-bin, it creates those same pages on demand in response to browser requests. Parsing of different source types, the creation, and the writing of pages are separated, making it easy to extend The Ming Server to new data types or delivery methods.
Enhancements:
- A bug in Logger was fixed along with a problem in ming.cgi.

Campus Chat Server project is a chat server intended for use in the Cadiz University campus network.
Enhancements:
- hash_maps are now used instead of maps, so the cost of lookup or insertion is O(1) in the average case, instead of O(logn).

pDonkeyS is Perl implementation of an eDonkey server. The main goal of the server is to provide framework for further eDonkey protocol exploration, but it could be useful in testing of client software, since the server can be configured to output very detailed debugging info about eDonkey traffic.

This server was made to provide framework for further eDonkey protocol exploration, but it could be usefull in testing of client software, since the server can be configured to output very detailed debug info about eDonkey traffic.

Tigase Server project is a lightweight and scalable Jabber/XMPP server. No third party libraries are needed. For services with very high load and a huge number of users, it can be deployed on as many machines as needed.
Enhancements:
- This release corrects and improves the packet filter, adds a startup script for Mandriva Linux, and fixes a problem with stream initialization on very fast machines.
- The IOService class is now synchronized.
- There are many performance improvements, and processing packets from/to remote servers has been added.

CrossFTP Server is a professional FTP Server for multiple platforms. It is a high-performance, extremely configurable, and most of all a secure FTP server. CrossFTP Server has an easy-to-use GUI for user to configure the servers behavior.
Main features:
- 100% pure Java, free, open source FTP server.
- Multi platform support and multithreaded design.
- User virtual directory, write permission, idle time-out and upload/download bandwidth limitation support.
- You can monitor all the user activities.
- Anonymous login support.
- Both upload and download files are resumable.
- Handles both ASCII and binary data transfers.
- IP restriction support to allow/ban IPs.
- Database and LDAP can be used to store user data.
- All the FTP messages are customizable.
- Implicit/explicit SSL/TLS support.
- MDTM support - your users can change the date-time stamp of files.
- "MODE Z" support for faster data upload/download.
- Easy installation/update by Java Web Start technology.