Hi, I’m Marty. I build practical software that’s simple, useful, and designed to last.
ChatKeeper is my desktop app for syncing your official ChatGPT exports into local Markdown and image files you actually own and can organize however you want.
If you’re here for open source, scroll down and explore the libraries and tools I’ve released over the years.
Questions about anything here? Reach out! I'd love to hear from you.
Open Source Projects
These are the libraries and tools I’ve released over the years. Some are current, some are older. Most are still useful.
| Project | Last Update | Description |
|---|---|---|
| atomicfileoutputstream | 2023/11/20 | A drop-in FileOutputStream replacement for java that performs all-or-nothing file overwrites to ensure data integrity. |
| blobstore | 2023/11/13 | A simple java API for providing a content-addressable, local disk-backed data store. |
| hope and doubt | 2019/07/13 | A tiny validation library for java that provides both optimistic (hope) and pessimistic (doubt) validation, throwing unchecked and checked validation exceptions, respectively. |
| macnificent | 2023/10/23 | Utility classes for working with MAC addresses and IEEE OUI registry information in java. |
| martian-hex | 2023/11/13 | A simple java library for converting binary data to and from hexadecimal in a variety of formats. |
| martian-log | 2023/11/13 | Simple extensions for slf4j that provide additional functionality and ergonomics. |
| tictac | 2014/10/19 | A typesafe text template-to-java precompiler that allows for arbitrary java code in templates. |
| twothousandfortyeight | 2023/11/21 | A silly but fun text adventure adaptation of the game 2048. |
Archived Projects
These projects are no longer maintained. Some are very old.
| Project | Last Update | Description |
|---|---|---|
| jar2sh | 2009/05/04 | Embed an entire java application in an executable shell script. |
| jsap | 2006/08/04 | Parse your command line into Objects instead of Strings. |
| nailgun | 2017/10/14 | Eliminate jvm startup time by running applications in a persistent virtual machine. |
| nearshare.net | ¯\_(ツ)_/¯ | A very easy way to transfer files within a network. |
| rundoc | 2004/02/17 | Keep documentation up to date by running example code automatically as you publish. |
| snip | 2004/02/17 | Keep source code snippets in sync with documentation by extracting sources automatically as you publish. |
| tarproxy | 2004/04/18 | Statistically control an SMTP tarpit to annoy spammers. |
| tivonage | 2006/03/13 | Check your Vonage voice mail on your TiVo. |
| trivial persist | 2008/03/13 | An incredibly simple java object persistence mechanism. |
Working on something adjacent?
If you’re building something thoughtful around privacy, local-first tools, developer experience, or just software that both users and developers can actually understand, I’d love to compare notes.
