ISL Online review

ISL Online is the option to look at when the question is not “what is cheapest” but “what will survive a security review”. It is a paid European product built for help desks, and its distinguishing feature is that you can run the entire thing on your own servers — with a licence model that includes paying by the minute.

ISL Online is not free. The client downloads without charge and there is a trial, but running sessions requires a licence. If free is the requirement, see RustDesk (unrestricted), AeroAdmin (17 hours a month) or Getscreen.me (two devices, commercial use allowed).

What ISL Online is

ISL Online is a remote support and remote access suite from a Slovenian company that has been in this market since 2001. The main component is ISL Light, the client that runs the actual sessions; alongside it sit ISL AlwaysOn for unattended access to managed machines, and ISL Groop for meetings and screen sharing.

The typical flow is the classic help-desk one: a technician starts a session, the customer runs a small client or enters a session code, and the technician takes over. Windows, macOS, Linux, Android and iOS are all covered, with the usual platform caveat that iOS devices can be viewed but not controlled — an Apple restriction, not an ISL Online one.

The licensing, which is the interesting part

Most competitors sell you a seat and bill monthly whether you use it or not. ISL Online offers several genuinely different models, and picking the right one changes the cost dramatically.

Model	Roughly	Suits
Pay per use	$0.25 / minute, sold in blocks	Occasional support — you pay only for session time
Cloud subscription	$17–$55 per user / month	Regular use by named technicians
Self-hosted server licence	from roughly $45 / month	Organisations that cannot use third-party infrastructure
Enterprise	around $100 / month and up	Larger deployments, cloud or on-premises

The pay-per-use model is unusual and genuinely valuable. Blocks of minutes are sold outright — on the order of $125 for 500 minutes — and consumed only when a session is running. If you do a handful of support calls a month, that is far cheaper than any subscription here, and there is nothing comparable at TeamViewer or AnyDesk.

Prices vary by region and volume and change over time; check ISL Online’s own pricing page before committing.

Self-hosting

The server licence lets you install ISL Online’s infrastructure inside your own network, so session traffic never touches the vendor’s servers. Two kinds of organisation care about this a great deal: those with a regulatory obligation about where data flows, and those whose security team will not approve a third-party relay.

Only RustDesk offers the same capability among the tools reviewed here, and the comparison is instructive. RustDesk self-hosting is free but you own the whole problem — deployment, updates, uptime. ISL Online charges for it and gives you a supported product with a vendor to call. For a business, that difference is usually the deciding one.

Security and compliance

ISL Online encrypts sessions end to end and is explicit about the compliance ground that matters to buyers in this segment — ISO 27001 certification, GDPR, and the option to keep everything on-premises. It also supports two-factor authentication, granular technician permissions and session recording for audit purposes.

This is the segment where ISL Online is strongest. It is not the fastest or cheapest tool here, but it is the one most obviously designed to be signed off by somebody whose job is to say no.

The standard warning still applies: remote support software is the standard instrument of technical support scams. Never join a remote session with someone who contacted you first.

Where ISL Online falls short

No free tier. A trial, then a licence.
Less well known, which in practice means end users are more hesitant to run it than something they recognise.
The licensing choice is itself a burden — four models is flexibility, but you have to understand your own usage before you can pick.
Interface is functional rather than modern. Built for technicians, not for a design award.
iOS cannot be controlled, only viewed — universal, but worth knowing before you buy.

Who it is for

ISL Online suits a help desk that needs a supported commercial product, and especially one facing a compliance requirement or an on-premises mandate. The pay-per-use option also makes it a genuinely sensible pick for a small consultancy doing occasional support, where a per-seat subscription would be mostly waste.

It is the wrong choice if you want free — RustDesk — or if you want the fastest, simplest personal tool, which is AnyDesk.

Researched against ISL Online’s published pricing and third-party listings in September 2026. Prices are approximate, vary by region and volume, and change — check the vendor’s pricing page before budgeting.