ISL Online vs TeamViewer (2026): which should you pick?

Pick ISL Online if

• Fits if you give support to customers and want a self-hosted server option
• Works for small teams that fit within 10 managed devices on Starter

Look elsewhere if

• Tight if you stay on Starter: 10 managed devices, and no REST API
• Pricey if you grow, as Standard, Premium and Self-Hosted are priced per concurrent user
• Watch out: only yearly-billed monthly figures are shown, with no month-to-month price, and tax is extra
• Skip it if you need SSO on a smaller plan, because external authentication starts above Standard

Pick TeamViewer if

• Fits if you're the one the family calls when the computer plays up
• Works for help desks already running ServiceNow, Jira or Intune that can pay $619.99 a year or more

Look elsewhere if

• Pricey if you're a one-person IT shop, as Business is $619.99 a year for one user
• Skip it if you need to control iPhones or iPads, which only share their screen, and phones need a paid add-on
• Not for you if your use is really work and you want it free, as the free version is personal only
• Tight if you need more than one connection at a time, which Business doesn't allow
• Watch out: prices change by visitor location, and the Remote Access, Premium and Corporate prices couldn't be read in dollars

ISL Online

• Standard, Premium and Self-Hosted are priced per concurrent user, and the checkout steps run from 1 to 20+ users.
• The pricing page shows monthly figures billed yearly; no month-to-month price is displayed.
• The REST API is not available on the Starter plan, and external authentication starts above Standard.
• A 15-day money-back guarantee applies; prices exclude tax.

TeamViewer

• TeamViewer's website shows prices by visitor location and could not be read in US dollars; Remote Access, Premium and Corporate prices are missing here.
• The free version is for personal use only; any business or work use needs a paid licence, which TeamViewer offers to trial for 14 days.
• Licences are billed yearly and cap the number of managed devices and simultaneous connections, e.g. one connection at a time on Business.
• Supporting phones and tablets is a paid add-on; for iPhones and iPads it is screen sharing rather than control.

ISL Online

Attended and unattended sessions

Technicians can support a user live or connect to computers set up for unattended access, including Android devices through the ISL Light app.

Connect via RDP and SSH

The site says technicians can jump to remote computers over RDP or SSH without VPN tunneling or firewall changes.

Session tools

The plan comparison lists session recording, a file manager, chat, audio and video calls, multiple monitors, curtain mode and a clipboard.

Hosting options

Besides the cloud license, ISL Online sells a self-hosted server license and a single-tenant managed private cloud.

Management and API

Higher plans add computer groups, user management, permissions, reports and a REST API; Premium and Self-Hosted add external authentication.

TeamViewer

Attended and unattended access

Connect to any number of devices when someone at the other end accepts, or to a set number of managed devices without anyone present, depending on the licence.

File transfer and remote printing

Send and queue files between devices and print documents from the remote computer to your local printer.

Wake-on-LAN and black screen

Power on a remote computer, block local keyboard and mouse input, and black out its screen while you work on it.

Session recording and switch sides

Record and replay sessions, and swap who controls whom during a session. Custom branding of support sessions comes with paid licences.

TeamViewer AI

Business includes 25 AI credits a month, one per support session, for AI-guided troubleshooting and written session summaries.

Mobile device support add-on

An add-on to reach and support Android devices and share the screen of iPhones and iPads, alongside desktop-to-desktop connections.

ISL Online

• Starter$16.90

  per month for 1 licensed user, billed annually

  $202.80 a year. 10 managed devices, mobile support, RDP connections, email invites and custom deployment links.

• Standard$34.90

  per month for 1 concurrent user, billed annually

  $418.80 a year per concurrent user. 40 licensed users, 1000 managed devices, user management and device permissions.

• Premium$54.90

  per month for 1 concurrent user, billed annually

  $658.80 a year per concurrent user. Unlimited users and devices, SSO/SAML, advanced customization and premium support.

• Self-Hosted$44.90

  per month for 1 concurrent user, billed annually

  $538.80 a year per concurrent user. On-premises server with unlimited users and devices; SAML SSO or LDAP supported.

• Managed Private Cloud$99.90

  per month per concurrent user, billed annually

  Single-tenant system sold from 20 licenses, so $23,976 a year at the entry point. Includes an account manager.

TeamViewer

• Free (personal use)$0

  For non-commercial use only: remote help for friends and family and access to your own computers, phones and tablets.

• Business$619.99

  per year, as an in-app purchase in the iOS app

  One licensed user, one connection at a time and up to 200 managed devices, with 25 AI credits a month. Price read on the US App Store.

ISL Online

No public discounts listed.

TeamViewer

• Nonprofit

  30% off for nonprofits and education

  Registered nonprofit and educational organizations that apply through TeamViewer's form get a 30% discount.