Ask HN: What simple tools or products are you most proud of making?

I foresee that sooner or later, your bot will get stuck in an endless conversation with a spambot which keeps replying, leading to another round of replies and then another...

An IBM developerWorks article: Developing a Linux command-line utility (selpg)

http://jugad2.blogspot.in/2014/09/my-ibm-developerworks-arti...

It's a tutorial on how to write a Linux command-line utility in C. Was up on the IBM dW site for long; now archived. Got some stars etc. Code and article text now available via (links in) the above post on my blog. Uses as a case study / demo, a real-life utility I wrote for a client, to print only selected pages from a text file, specified by line number range or page range (form-feed-delimited pages, a common industry format for line printers). It was for a very large company with huge print jobs, so if the paper jammed in mid-job, this utility could save them a lot of time and paper, by letting them print only the un-printed pages. They might still be using it several years after it was written. I had also shared it on the HP-UX mailing list, and people said it was useful.

This post shows how to use that utility (selpg) with xtopdf (another project of mine, for PDF generation from Python):

Print selected text pages to PDF with Python, selpg and xtopdf on Linux

http://jugad2.blogspot.in/2014/10/print-selected-text-pages-...

PySiteCreator was a bit innovative and fun to do. It lets you create simple web sites by writing them purely in Python. I designed it to impose as few requirements or constraints on the user as I could, so that it would be more generally useful, i.e. more like a library than a framework, though it is a sort of framework, since it calls code you write.

Early release of PySiteCreator - v0.1

http://jugad2.blogspot.in/2009/11/early-release-of-pysitecre...

That post describes the ways it can be used. I originally created it with the goal of creating simple wikis using Python, but then realized that it generalized to any web site, so changed the name from DSLWiki (a DSL for wikis) to PySiteCreator :)

And while this one - pipe_controller - is not really a tool or product (it is an experiment), I enjoyed seeing what I could do with it - like running a pipe incrementally and swapping pipe components at runtime. There are few posts describing those experiments, in reverse chronological order, starting from this last post:

Swapping pipe components at runtime with pipe_controller:

http://jugad2.blogspot.in/2012/10/swapping-pipe-components-a...

Edit: I'm working a few other products, some for sale, some free, so anyone interested in checking them out, is welcome to follow me for email updates here on Gumroad:

https://gumroad.com/vasudevram/follow

(There are a few small free utilities in early versions there now too.)

I only send out a few updates a month (if that), and only if I have a new product or an update to an existing one to announce.

Edited for typos / re-wording.

An easy to use wallpaper/config manager and themer for GNU/Linux which takes it's colorscheme from the wallpaper and applies it to things like the terminal, tint2, openbox, GTK2/3 and optional config files too, so the color scheme affects all the config files specified. It's compatible with everything that uses written config files and hex colors!