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Kleos

Kleos · Alphen aan den Rijn, Netherlands · founded 1836

What it is

Kleos is cloud-native legal practice management software that requires an internet connection. Its app is available for iOS and Android. It integrates with Microsoft Word and Outlook, and time management syncs in real time with Microsoft Outlook or Google Calendar. Kleos Connect lets users share documents with clients or other parties through a secure platform, and the service can accept online payments through Stripe. Three plans are listed: Core, Advanced, and Advanced+, with pricing on request and no free plan stated. Included cloud storage is 15 GB for Core, 25 GB for Advanced, and 30 GB for Advanced+. Advanced and Advanced+ include business reports and Microsoft Teams; Advanced+ also adds SSO. An API is unavailable in Core and offered as an add-on in the two higher plans. Kleos says it is GDPR compliant and certified to ISO/IEC 27001:2013 and 22301:2019. European data centers use HTTPS, TLS 1.2, and AES 256. Support includes phone assistance five days a week and a digital ticket system available 24/7.

For and against

For

  • Apps are available for iOS and Android.
  • Syncs time management with Outlook or Google Calendar.
  • Kleos Connect supports secure document sharing.
  • Accepts online payments through Stripe.
  • Includes 24/7 digital ticket support.

Against

  • Requires an internet connection.
  • No free plan or trial terms are stated.
  • Pricing is available on request.
  • API is unavailable in Core.

The verdict

Kleos combines legal practice management with document sharing, calendar sync, and online payments. Compare the three tiers for storage and included features; pricing is on request.

Who it suits

Kleos suits legal practices looking for cloud-based practice management with mobile access, document sharing, and billing and payment functions. It requires an internet connection, and plan features and storage vary by tier.

Plans and prices

Core

Priced on request

15 GB cloud storage

Advanced

Priced on request

25 GB cloud storage

Advanced+

Priced on request

30 GB cloud storage

Every plan, in full

On the record

API integration
An API is unavailable in Core and offered as an add-on in Advanced and Advanced+.wolterskluwer.com · read 27 Sep 2026
Calendar sync
Time management syncs in real time with Microsoft Outlook or Google Calendar.wolterskluwer.com · read 27 Sep 2026
Cloud-native software
Kleos is a cloud-native legal practice management solution operating natively in the cloud.wolterskluwer.com · read 27 Sep 2026
Company scope
Wolters Kluwer is a global provider of information solutions, software, and professional services.wolterskluwer.com · read 27 Sep 2026
European users
Kleos is trusted by more than 30,000 legal professionals in Europe.wolterskluwer.com · read 27 Sep 2026
Encryption and storage
European data centers use HTTPS, TLS 1.2, and AES 256; included storage varies by plan.wolterskluwer.com · read 27 Sep 2026
Expert AI
Kleos Expert AI can review, highlight, summarize, compare, and extract data from documents.wolterskluwer.com · read 27 Sep 2026
Free tier
No free plan is stated on the supplied pricing page.wolterskluwer.com · read 27 Sep 2026
Internet required
Using Kleos requires an internet connection.wolterskluwer.com · read 27 Sep 2026
Mobile apps
Yeswolterskluwer.com · read 20 Sep 2026
Mobile platforms
The Kleos App is available for iOS and Android.wolterskluwer.com · read 27 Sep 2026
Office integrations
Kleos integrates with Microsoft Word and Outlook, with Teams on Advanced and Advanced+.wolterskluwer.com · read 27 Sep 2026
Stripe payments
Kleos can accept online payments directly through Stripe.wolterskluwer.com · read 27 Sep 2026
Included storage
Core includes 15 GB, Advanced 25 GB, and Advanced+ 30 GB of cloud storage.wolterskluwer.com · read 27 Sep 2026
Tiered pricing
Three plans are listed: Core, Advanced, and Advanced+.wolterskluwer.com · read 27 Sep 2026
Secure file sharing
Kleos Connect shares documents with clients or third parties through a secure platform.wolterskluwer.com · read 27 Sep 2026
Security certifications
The service is GDPR compliant and certified to ISO/IEC 27001:2013 and 22301:2019.wolterskluwer.com · read 27 Sep 2026
Support availability
Support includes phone assistance five days weekly and a digital ticket system available 24/7.wolterskluwer.com · read 27 Sep 2026

The review

Kleos is legal practice management software for firms that want cloud access alongside client document sharing, calendar sync and online payments. It suits connected legal teams that work with Microsoft or Google calendars. The main trade-off is plan-dependent storage and features, with custom pricing that calls for a quote before comparing costs.

Overview

Kleos brings legal practice work into a cloud-native service, with mobile apps for iOS and Android. An internet connection is required, so firms that need offline access should look elsewhere. More than 30,000 legal professionals in Europe use Kleos.

European data centers use HTTPS, TLS 1.2 and AES 256 encryption. Kleos is GDPR compliant and certified to ISO/IEC 27001:2013 and 22301:2019. Those protections matter for firms handling sensitive client files, while secure sharing through Kleos Connect and Stripe payments extend the service into client-facing work.

Key features

  • Calendar and time management: Time management syncs in real time with Microsoft Outlook or Google Calendar. That helps keep schedules aligned with either calendar, though the connection requirement rules out offline use.
  • Office tools: Kleos integrates with Microsoft Word and Outlook on all three plans. Microsoft Teams is included with Advanced and Advanced+, giving those tiers a stronger fit for teams already using it.
  • Client documents and payments: Kleos Connect shares documents with clients and other third parties through a secure platform. Stripe supports online payments, and the product includes a client portal, document automation and time tracking.
  • Administration and integration: Advanced and Advanced+ add business reports. An API is unavailable on Core and offered as an add-on on the two higher plans, so firms needing API integration should account for the extra cost.
  • Single sign-on: Advanced+ adds SSO, a distinction for firms that want this sign-in option as part of their plan.
  • Expert AI: Kleos Expert AI can review, highlight, summarize, compare and extract data from documents, supporting document-heavy work.
  • Support: Phone assistance is available five days a week, with a digital ticket system available around the clock.

Pricing

Kleos has three paid, per-user plans with custom pricing. The quoted plan figures are 49 EUR /Mes por usuario for Core, 65 EUR /Mes por usuario for Advanced and 69 EUR /Mes por usuario for Advanced+. Advanced+ also shows a regular price of 79 EUR and a special offer. Each plan requires a demo request; confirm the price, billing terms and offer conditions when requesting a quote.

  • Core: 15 GB of cloud storage, Word and Outlook integration, calendar sync, and the core legal practice tools. It lacks Teams, business reports and API availability, making it the entry option for firms that can work without those extras.
  • Advanced: 25 GB of storage, Microsoft Teams and business reports. The API is available as an add-on. It fits firms that need those team features and more storage than Core provides.
  • Advanced+: 30 GB of storage, Teams, business reports and SSO, with API access available as an add-on. It is the strongest fit for teams that need SSO or the largest storage allowance of the three.

There is no free plan. No trial or refund terms are stated, so firms should clarify those before committing.

Platforms

Kleos runs in the cloud and has apps for Android and iOS. Its internet requirement makes it unsuitable where staff need to continue working without a connection.

Who it's for

Kleos is a good fit for legal practices that want time tracking, document automation, client sharing and online payment support in a cloud service, especially when they already rely on Microsoft Office or Outlook and Google Calendar. Firms should compare plans against their storage needs and whether they require Teams, business reports, SSO or API access. Practices needing offline operation or a free tier should look elsewhere.

Pros and cons

  • Pros: Real-time sync with Outlook or Google Calendar helps keep schedules aligned; Kleos Connect and Stripe cover client document sharing and online payments; European data centers, stated encryption standards and security certifications support a security-conscious choice.
  • Cons: Internet access is required, ruling out offline work; Core has just 15 GB and no API, while API access on higher plans costs extra; there is no free plan, and custom pricing requires a quote to establish cost.

Alternatives

For legal practice management, compare Legal Practice Management Software. If client portals are the priority, see Legal Client Portal Software.

OneStream is a paid alternative with Android, iOS, API, self-hosted, web and Windows platform options; its pricing is discussed through a demo. Flowie is worth considering when a free entry tier matters: its forever-free plan processes up to 24 documents a month (300 a year), with basic processing, no workflows and one entity. CSC Corptax is paid enterprise corporate tax software with demo-request pricing. Lucasys Tax Provision, PowerPlan Tax Provision, Tax Series, TaxLab Nucleus and TaxProvision.net are other paid alternatives.

For adjacent tax and finance categories, browse Tax Provision Software, VAT Software, Fixed Asset Management Software and Tax Compliance Software.

Verdict

Choose Kleos if your legal practice wants cloud-based matter work with calendar sync, secure client document sharing and Stripe payments, and can select a plan around its storage and team needs. Its connected workflow and documented security credentials are compelling strengths; the required internet connection and quote-based pricing are the main reasons to consider another fit.

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