> I actually liked Bongo a lot - it was great for quickly prototyping an idea. I haven’t had any luck finding it.

Not familiar with Bongo, and not sure if this fits what you are looking for.

> IBM Developer Connection Release 2 Volume 2

> June 1998

> Discontinued Software

> This is a complete list of the The IBM Developer Connection Release 2, Volume 2 content.

> […]

> Bongo, Castanet Tuner & Transmitter (Marimba) (M9)

https://archive.org/details/IBMDevConR2V2#ia-carousel

Might be worth to download CD_09.zip and have a look https://archive.org/download/IBMDevConR2V2

You’ll need a way to mount bin and cue files.

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Edit: So I just had a look at the contents of the CD 9. I had to convert the bin and cue file to iso in order to mount it. Did so using a cli tool called "bchunk".

When you mount the CD, there is an "index.htm" file that you can open in your web browser.
This page is a little confusing because it has no other navigation than a link to the license agreement.

On the bottom of the license page, you see:

> Enter the Catalog

> Select a catalog option below to explore the variety of content available from the Developer Connection. Select the appropriate Java catalog based on the Java level supported by your browser. For Java 1.1, be sure to obtain the latest browser updates.

> Java catalog (Java 1.0)

> Java catalog (Java 1.1)

> Pure HTML catalog

Click that link for the Pure HTML catalog.

From there, click the link "Bongo, Castanet Tuner & Transmitter (Marimba) (M9)"

There we find the following description:

> Bongo, Castanet Tuner & Transmitter (Marimba) (M9)

> This product is located on Member Disc 9.

> Bongo is a visual interface builder for Java. Bongo includes a wide variety of interface "widgets" to enable rapid development of rich user interfaces. Widgets are pre-written visual controls, ready to immediately insert into Bongo. Simply drag and drop Bongo widgets to create a stunning visual interface, then use Bongo to add intelligence behind the interface via scripts written in Java.

> Unlike widgets in most builders, Bongo widgets can be transparent or opaque, offering developers a great deal of flexibility and ease of use. Features such as these make Bongo an extremely powerful development tool. Bongo can produce visual interfaces for stand-alone Java applications as well as applets.

> Best of all, Bongo's output can be directly published as a Marimba Castanet channel, and the presentation is then automatically distributed and maintained by Castanet within a company or across the Internet. Bongo is not required for developing Castanet channels, but if you're looking for a great tool that makes it easy to create Castanet channels, Bongo is for you.

> Castanet automatically distributes and maintains software applications and content within a company or across the Internet. The Castanet Transmitter (server) and Castanet Tuner (client) work together to keep software and content always up-to-date. Create a "channel" and place it on a Castanet Transmitter. Castanet automatically distributes, installs, maintains, and updates the channel, all via the internet. Castanet can support any type of channel: internal corporate applications, multimedia consumer channels, and more.

And the install instructions:

> Installation Instructions:

> To install from the CD:

> 1. Change to the \marimba\bongo directory on the CD and type bongo1_0.

> 2. Change to the \marimba\tuner directory on the CD and type tuner1_0.

> 3. Change to the \marimba\transmit directory on the CD and type trans1_0.

These files are all Windows exe files.

I tried to run bongo1_0.exe in Wine, but nothing happened.

I don't usually use Windows anymore, not since many years. But I do have a laptop that I recently installed an old copy of Windows 7 on because I needed to use another piece of software that was also Windows only.