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51

I love PuTTY ! The PuTTY executables and source code are distributed under the MIT licence, which is similar in effect to the BSD licence. (This licence is Open Source certified and complies with the Debian Free Software Guidelines.)


50

Notepad++ lightweight, has excellent support for different formats, my main text editing tool in windows.


47

Synergy Synergy lets you easily share a single mouse and keyboard between multiple computers with different operating systems without special hardware. It's intended for users with multiple computers on their desk since each system uses its own display. It is also platform independent.


45

UnxUtils: This is a port of various gnu shell utilities based on msvcrt.dll so it understands native windows paths - i.e. you don't need to map to a /cygdrive path. This is a key advantage over Cygwin if you have to interact with native windows commands or homebrew CL utilities. Strings: is a very good way to scrounge through files for items of text. ...


45

Nobody mentioned screen yet?


43

My favourite open source tool is rsync. I use it almost every day and it is still not as famous as it should be:-)


38

No one mentioned git. It is not as well known as cvs or svn but I think it will be one day.


38

7-zip--a file archiver with the high compression ratio. The program supports 7z, ZIP, CAB, RAR, ARJ, LZH, CHM, GZIP, BZIP2, Z, TAR, CPIO, ISO, MSI, WIM, NSIS, RPM and DEB formats.


36

FileZilla - available as both a client and server.


30

Vim/gVim - an editor practically no one's heard of!


26

Wireshark = Network Protocol analyzer. Kismet = A powerful wireless sniffer. Tcpdump = The classic sniffer for network monitoring and data acquisition, I use it regularly. Pound = The Pound program is a reverse proxy, load balancer and HTTPS front-end for Web server(s). Trac = Project management and bug/issue tracking system. Provides an interface to ...


22

What exactly do you need? wireshark - network sniffer/analyzer iftop - bandwidth usage darkstat - traffic analyzer nmap - network port scanner nessus - vulnerability scanner metasploit - penetration testing


21

KeePass is a free open source password manager, which helps you to manage your passwords in a secure way. You can put all your passwords in one database, which is locked with one master key and/or a key file.


17

Open Source Look at the project web site Look at the documentation Look at the mailing list archives Look at the SCM (svn, git, hg, etc) In doing so, pick up on the following points... How mature is the software What is the user-base size (lots of people? 3 people?) Who are the people in the user-base (corporate, home user, small business, etc) Is ...


17

Screen. It's the most useful tool ever made. Master it and you can be as unto a god, a creature in all places at once.


16

I like GParted and CloneZilla. GParted is my favorite for single-use, CloneZilla's best when you need to blast images out across the network.


16

Zimbra is an open source alternative to Microsoft Exchange. It uses a number of open source products, namely Postfix, Tomcat and OpenLdap. It can interact with Active Directory and other directory structures. It also offers a pretty extensive AJAX enabled web interface. It offers most of the features offered by Exchange: Email Contacts Shared Calendaring ...


16

I use many that I couldn't work without but that I don't consider "not very famous" (openssh, openvnp, apache, rsync, ...). Two very useful little utilities that many may not have heard of sprint to mind: Pipe Viewer (pv): keep tabs on long operations htop: a prettier alternative to top with a few useful extra features as well as the pretty Both can ...


16

Nagios--Comprehensive IT infrastructure monitoring ensures you can resolve problems before they affect critical business processes....


16

If you want to install your own Twitter alternative I would take a look at StatusNet. That is the "open source microblogging platform" which among other things powers identi.ca.


16

Having recently gone through the same song and dance with my own management ("VMWare is really expensive! Check out what OSS options there are out there.") I have some observations to share. I/O performance does vary by hypervisor, though CPU performance is much less variant. In general, 'thin' provisioning is a great way to dock I/O performance. Some ...


15

My recommendation for an IMAP and POP3 server would be Dovecot. It uses the Maildir format, which uses a single file per email, which tends to perform better in most operations than the traditional mbox format. Dovecot uses a number of index files to speed up the performance of the operations that traditionally take a while with Maildir. If Maildir isn't ...


14

We currently used PowerDNS to host many zones using a MySQL server. PowerDNS has been great to us. Some pros/cons: Pros: Uses MySQL backend - other DB backends are available Updates to DB are published instantaneously Very friendly to MySQL Replication. We run two servers with replication and updates published instantaneously to both DBs (and dns ...


14

ack - a grep replacement. You'll never grep again :)


13

Ahh...the white whale of open source, the Exchange killer. There's no shortage of competitors: SoGO Open-XChange Zimbra Citadel Bongo Horde @Mail Meldware OpenChange Scalix eGroupWare phpGroupWare And, for those that aren't necessarily looking for free (in either sense), but just don't like Microsoft or Exchange: Gordano PostPath (once Cisco decides ...


12

Sure, OpenOffice For an OS, try Ubuntu or LinuxMint


12

Evolution, by way of evolution-mapi: Package: evolution-mapi Description: Evolution extension for MS Exchange 2007 servers A provider for Evolution that can connect to Exchange 2007 servers and also to Exchange 2003, 2000 and 5.5. It is very beta though, so please report bugs!


12

Best Practical: Request Tracker RT is an enterprise-grade ticketing system which enables a group of people to intelligently and efficiently manage tasks, issues, and requests submitted by a community of users. RT manages key tasks such as the identification, prioritization, assignment, resolution and notification required by enterprise-critical ...


11

Dia is a such program. DiaCze is a windows only version packaged with icon for network diagramming (but you can extract content on a windows computer and copy it to a unix system). Edit: I discovered Kivio today, a Visio like (but still in development)



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