These are some tools I recommend.
I use this stuff all the time.
A new 'make' but the makefiles are XML and the tool is written in Java.
Very handy for compiling big Java projects. Less arcane than 'make'.
A framework for writing and running unit tests for Java code. This
seems to be the de-facto standard for unit tests in Java.
The open source
web and mail client.It's in pretty decent shape. The mail client is
very nice. Infamously bloated, if you care about that.
The reference implementation for Java Servlets and JSP.
An extremely convenient file synchronizer. I use it every day.
An XML parser. I use the first Java version.
A Ripper/Encoder wrapper for Linux. Supports CDDB so you don't have to
manually enter cd and song titles. Uses a built-in cdparanoia module for
ripping (you can change it if you want) and 3rd party encoding tools for
encoding. I use ...
An mp3 encoder. I use it in Linux and Windows.
A Ripper/Encoder wrapper for Windows. EAC handles the ripping and uses
a third-party encoder (usually Lame -- see above). (I used to use
MusicMatch for ripping/encoding but the ripping program, though fast,
often left skips in the WAV files. And the encoder did weird things to
the sound and never created proper VBR files.)
I've used this stuff in the past, or I use it from time to time.
Checks Java source code for coding convention violations. Some of it
was written by me. Well, a very tiny bit.
A Java-based build manager based on Ant, XML and XSL. Integrates
with CVS and other version control systems. Also supports JUnit.
A nice visual diff. It can be used for cvs diffs.
A free Java IDE that is very nice. Unfortunately it doesn't handle
Java1.5 yet. I used to use Netbeans but I've made the switch.
Perl-CGI based bug tracking web app. I've used it a bit and it does
everything I can think of. Setting up Perl and MySQL was a pain, of
A new Java Servlet-based bug tracking web app.
An XSL processor. I have used it to generate HTML from DocBook documents.
A C crypto/SSL library. Good for calling crypto functions (encrypt,
hash, etc.) and generating and examining certificates. The documentation
is shockingly incomplete.
Checks HTML for mistakes. It also cleans up and indents HTML.