Recent updates
28 Dec '24: Find Any File 2.5.4
16 Nov '23: Launch Services 2.2.4
23 May '23: iClip 5.5.7
26 Jan '23: Find Empty Folders 1.3.1
23 Okt '22: Prefs Editor 1.4.1
30 Dec '21: Find Any File 2.3.2
24 Jul '20: iBored 1.2
14 May '20: What's Open 4.0.1
Software for everyone
Find Any File (FAF)
For macOS. Shareware (try first, pay later), $6.
Finds files by name, date, size etc. The perfect companion to Spotlight.
See the Find Any File page for more information and download.
iClip
For macOS. Shareware (try first, pay later), $14.99.
iClip manages clippings of text, images and files. It optionally automatically records the contents of the clipboard every time you copy something. I am the main developer of iClip.
See the iClip site for more information and download.
Software for power users
Prefs Editor
For macOS. Free.
Lets you edit the preferences of any application. Like the 'defaults' command in Terminal.app, but easier to use.
See the Prefs Editor page for more information and download.
Find Empty Folders
For macOS. Free.
This little tool finds folders that have no files inside, apart from other empty folders invisible files such as .DS_Store, and gives you the option to delete them.
If you need more options, you can also use Find Any File with the script "Find empty folders".
What's Open
For macOS. Free.
Lists open files on all volumes, for any user. Helps figuring who which apps prevent a volume from being ejected or unmounted.
See the What's Open page for more information and download.
Software for developers and system analysts
iBored
For macOS, Windows, Linux. Free.
The internet-enabled Block Oriented Editor is a tool to view and edit disk sectors and related files.
See the iBored page for more information and download.
Launch Services
For macOS. Free.
A tool to work with the Mac's registry. Lets you browse the entire UTI tree and look up apps that open a specific file extension or match a bundle ID.
See the Launch Services page for more information and download.
ShowClipboards
For macOS. Free.
A tool for developers to analyse and test the clipboard / pasteboard.
SSDP / UPnP Browser
For macOS. Free with Source Code.
SSDP is a method (protocol) for finding devices on local networks, including UPnP devices. It's similar to Bonjour (Zeroconf) but more popular outside the Apple world.
You can download the built app at https://github.com/tempelmann/SSDP-Browser/releases.
This app also comes with source code (Objective-C), being a nice example on how to use NSOutlineView, NSTreeController and Bindings. It opens in Xcode 8 and later.