When the software says no.

dTect Lightning

Lightning warning for schools and sports grounds, built to be read in a hurry.

• Frontend · installable web app
• WebSocket · sub-second updates
• Leaflet over OpenStreetMap

A detection network produces a stream of coordinates and timestamps. That is not the same thing as a groundsman knowing whether to call the children off the field. Closing the gap between having the data and being able to act on it — in the minute or so you actually have — is the whole problem, and it is a front-end problem.

Wiltech built the front end. Strikes arrive over a WebSocket and land on a live map as concentric proximity rings, so distance reads as a picture rather than a number, with cloud-to-ground and cloud-to-cloud held apart because they do not warrant the same response at the same range. A dashboard groups every detection unit by site and says plainly whether each is online, stale or offline and when it was last heard from — a warning system that has quietly stopped listening is more dangerous than none at all. Sites can be triggered and cleared by hand when someone on the ground knows what the sensors do not.

The all-clear is treated as a first-class state rather than the absence of an alarm, because resuming play is the decision people actually wait on. History is kept for safety audits and insurance. It installs to a phone like an app and works offline, which is where it is used — outdoors, on a handset, in a hurry. Wiltech Solutions holds a shareholding in dTect Lightning.

Marshal

Live group tracking for Garmin watches and bike computers, on one control-room screen.

• Connect IQ 5.0 or later · 82 devices
• Realtime Database · 60-second telemetry
• Leaflet over OpenStreetMap

Garmin's LiveTrack follows one athlete, for that athlete's own followers. A race marshal, a ride captain or a trail organiser needs the opposite — everybody at once, on one screen. Garmin does not sell that, and the obvious way to build it makes the rider pay for it: an app they launch replaces the activity they came to record, taking their navigation, their laps and their own screens with it.

Marshal is a data field instead. A participant adds it to a screen of whatever activity they already use — run, ride, hike, ski — presses start as usual, and telemetry flows. The control room gets a live map and a card per participant: position, heart rate, speed, distance, and power or cadence where the device actually reports them. What a device cannot supply is left off rather than shown as a zero, because half these watches have no power field at all and a confident nought is worse than a dash.

A device never announces that it has finished; it just stops reporting. Someone who completed the course and someone whose phone died look identical from the control room, so Marshal claims neither — it shows time since last report, aged against the server's clock rather than the laptop's, and re-counts every second, because a frozen "12 seconds ago" is precisely the lie this thing must not tell. Organisers create their own events with a join code, see only their own, and can delete the data outright. Heart rate is special personal information under POPIA, and it is treated that way.

Argus

A video wall for cameras other software refuses to display.

• Runs on the customer's own machine
• No recording · View only
• MIT licensed · No camera limit

Dahua's camera software will not let you add an arbitrary RTSP device. A Fanvil door intercom sits on the same network as the cameras, streams perfectly well, and simply cannot be put on the same screen as them. The software says no, and there is no setting that changes its mind.

Argus takes the streams those devices already publish and puts any mix of them onto one browser-based wall — cameras and intercom together, with audio, low latency, and layouts you can drag to whatever shape the room needs. It runs entirely on the customer's own machine, so no video and no camera passwords leave the building.

Argus is open source and free to run. Every line of it is published, so the people running it can read and audit exactly what it does. There is no camera limit, no licence key and no account — one camera at a reception desk or forty across a site, it is the same software.