Nine client-work PSA tools. Prices come from each vendor’s own pages, per user per month on annual billing unless the cell says otherwise, in US dollars except Scoro, which prices in euros (not converted), read on 25 September 2026 (Productive and Teamwork.com on 24 October 2026).
| Tool | Best for | Pricing model | Starting price | Time tracking | Invoicing | Resource planning |
|---|---|---|---|---|---|---|
| Kantata | Large services organizations | Custom quote | Not published | Time and expense entry; time approvals | Native invoicing; time and expenses can also go to QuickBooks | Resource forecasting and matching people by skill |
| Certinia | Firms that run on Salesforce | Demo request; no published price | Not published | Not stated on the pages we read | Billing described; accounting is a separate product (Financial Management Cloud) | Resource planning named on its Professional Services Cloud page |
| BigTime | Accounting, engineering and consulting firms on QuickBooks | Per user; higher plans on request | From $20 per user (Essentials); billing cycle not stated | All plans | All plans, with payments | Resource Management module; plan not stated |
| Accelo | Quote-to-invoice with retainers and tickets | Custom quote | Not published | Timers, automated timesheets and weekly approval | Automated invoicing and payment processing | Resource scheduling; plan not stated |
| Scoro | Quoting, CRM and project finance in one suite | Per user, minimum 5; sold as app combinations | From €15 per user as displayed; billing cycle not labelled | Track app | Invoice app | Capacity and workload planning in the Projects & Resources and End-to-end combinations |
| Productive | Agencies that want planning and a pipeline | Per user, minimum 3 seats | $10 per user (Essential); $100 a month for 10 | All plans; time approvals from Professional | All plans | All plans |
| Teamwork.com | A free start and a low entry price | Per user; free plan up to 5 users | $9.99 per user (Basics, minimum 3); $99.90 a month for 10 | All plans | Basic invoices from logged time on Accelerate; margin, tax and discounts on Optimize | Workload and capacity on Accelerate; scheduling by role or skill on Optimize |
| Rocketlane | Onboarding and implementation teams | Per team member, minimum 5 | $49 per team member (Standard) | Standard and Premium | Premium | Premium |
| PLYNTUM (our product) | Firms of up to 25 people that want a flat price | Per workspace, members included | $44 a month for up to 5 members (Launch) or $120 for up to 10 (Core), billed annually; $55 and $150 billed monthly | All plans; manager approval from Core | All plans; recurring invoices from Core | Workload and capacity view on Scale |
How we compared. Only what each vendor’s own pages state, with no review sites or sales calls: prices on 25 September 2026 (Productive and Teamwork.com on 24 October 2026), and the resource planning column for Accelo, BigTime, Certinia, Scoro and Teamwork.com on 10 October 2026 (accelo.com, bigtime.net, certinia.com, scoro.com, teamwork.com). “Not stated” means unconfirmed. PLYNTUM is our product and follows the same rules; the method is set out in our study What business software costs a 10-person service team in 2026.
Head to head: PLYNTUM vs Productive, PLYNTUM vs Teamwork.com and Productive alternatives. By type of firm: agency management software and software for consulting firms.
"},{"heading":"Which PSA fits which firm","html":"All nine tools connect client projects, people’s time and the money around them. They differ in who they are built for, how you buy them and how much of sales and finance they cover.
For a team of about 3 to 25 people, our guide to PSA software for small businesses sets out the minimum feature set, the cost at 5, 10 and 25 people and a buyer checklist.
"},{"heading":"Professional services automation tools for agencies","html":"Agencies use professional services automation tools for the same core as any client-work firm, plus three agency habits: retainers that renew every month, scope that grows inside a fixed fee, and clients who want to see progress without a status meeting. So check three things beyond projects and time. First, recurring invoices for retainers and a margin per client, not only per project. Second, time tracked against a budget, so scope creep shows before the month closes. Third, client access to their own work, not to your internal numbers.
Of the nine tools, Productive, Scoro and Teamwork.com are built with agencies in mind, and Accelo covers retainers together with quotes and tickets. In PLYNTUM, recurring invoices, project profitability and the client portal start on Core, and capacity planning on Scale. If your agency needs tasks, boards and deadlines first and the money side later, start with our comparison of agency project management software, which covers fourteen tools.
"},{"heading":"How we chose and what we checked","html":"“PSA” names two different markets. This guide covers PSA for client-work firms: agencies, consultancies, accounting and engineering practices and implementation teams, where the job is to plan people’s time, record it, bill it and see the margin. PSA for managed IT service providers, such as ConnectWise PSA, Autotask and HaloPSA, is built around helpdesk tickets, service-level agreements, per-device contracts and remote monitoring. Those products are not covered here, and PLYNTUM does none of that. For what a PSA does step by step, see our page on professional services automation; how a PSA differs from an ERP is set out in PSA vs ERP.
"},{"heading":"PSA software comparison: published price for 10 people","html":"Per month for 10 people, in US dollars except Scoro, which shows its prices in euros; we do not convert them. PLYNTUM is priced per workspace with members included; the others per user.
| Tool | Best for | Published price for 10 people | Free trial |
|---|---|---|---|
| Kantata | Large services organizations | Price on request (checked 25 Sep 2026) | None stated |
| Certinia | Firms that run on Salesforce | Price on request (checked 25 Sep 2026) | None stated; demo request |
| BigTime | Accounting, engineering and consulting firms on QuickBooks | From $200 (Essentials, from $20 per user; billing cycle not stated); higher plans on request (checked 25 Sep 2026) | None stated; demo request |
| Accelo | Quote-to-invoice with retainers and tickets | Price on request (checked 25 Sep 2026) | None published |
| Scoro | Quoting, CRM and project finance in one suite | In euros: about €150–€520, depending on the apps; minimum 5 users; onboarding and add-ons extra (checked 25 Sep 2026) | 14 days |
| Productive | Agencies that want planning and a pipeline | $100 (Essential) to $250 (Professional); Ultimate on request (checked 24 Oct 2026) | 14 days |
| Teamwork.com | A free start and a low entry price | $99.90 (Basics) to $249.90 (Accelerate); higher plans on request (checked 24 Oct 2026) | 14 days; free plan up to 5 users |
| Rocketlane | Onboarding and implementation teams | $490 (Standard) to $690 (Premium); minimum 5 (checked 25 Sep 2026) | 14 days |
| PLYNTUM | Firms of up to 25 people that want a flat price | $120 billed annually or $150 billed monthly (Core, up to 10 members) | 7 days, Launch plan only; no free plan |
From each vendor’s own pages. Annual billing unless stated; tax excluded. Feature scope differs, so the table compares price, not value.
Three patterns stand out. Kantata, Certinia and Accelo publish no price, and BigTime prices only its entry plan. Among published prices the spread is wide: Teamwork.com Accelerate, with invoices from logged time and time tracked against budgets, costs $249.90 a month for 10 people; Rocketlane Premium, with resource management, invoicing and margins, costs $690. And per-user prices grow with every hire, while PLYNTUM moves in steps: the 11th member moves a workspace from Core to Scale, $450 a month or $360 billed annually. For more tools, see our agency management software guide.
"},{"heading":"The nine PSA tools, one by one","html":"Kantata, formed from Mavenlink and Kimble, is built for larger services organizations: resource forecasting, matching people to work by skill, and revenue-level financial management. Time approvals, invoicing and expenses are built in.
More: PLYNTUM vs Kantata and Kantata alternatives.
Certinia is built natively on the Salesforce platform. It sells Professional Services Cloud, its PSA, next to Financial Management Cloud, which it describes as ERP, so sales, delivery and accounting can share one platform.
BigTime targets accounting, architecture, consulting, engineering and IT services firms that need more than a time tracker and less than an ERP. It says it is the only PSA natively integrated with both QuickBooks Desktop and QuickBooks Online. Every plan includes time tracking, invoicing, expenses and payments.
Accelo covers client work from quote to invoice and goes deeper than most along that path: quotes and opportunities, retainers, contracts, tickets, weekly timesheet approval and a client portal where clients accept quotes. It integrates with HubSpot and Salesforce.
More: PLYNTUM vs Accelo.
Scoro combines projects, resourcing and finances for consultancies, agencies and engineering firms, with quoting, a sales CRM and reports such as quoted-versus-actual and work in progress. It is sold as apps, so the price depends on which you choose.
More: PLYNTUM vs Scoro and Scoro alternatives.
Productive runs resources, projects and finances for agencies and consultancies. Resource planning and a sales pipeline with deals are on every plan; time and expense approvals start on Professional, and timesheet submission, time locking and revenue recognition are on Ultimate.
More: PLYNTUM vs Productive and Productive alternatives.
Teamwork.com runs projects, resources and financials for client work and has a free plan for up to 5 users. Basics lets client users into projects; Accelerate adds timesheets, basic invoices from logged time and time tracked against budgets.
More: PLYNTUM vs Teamwork.com.
Rocketlane calls itself an all-in-one PSA and is built for delivery teams, including the customer onboarding and implementation teams of software companies. Standard covers projects, time tracking and a customer portal; Premium adds resource management, invoicing, revenue recognition and margins.
PLYNTUM is our product: a business workspace for agencies and service companies, in English and Georgian. Projects, manual time tracking, invoices, expenses and receivables are on every plan. From Core, managers approve timesheets, which locks each week, and every logged hour counts as project cost at each person’s loaded hourly cost, so profitability (contribution before overhead) shows while the work runs. Core also adds recurring invoices and a client portal; resource planning comes with Scale. See time tracking and finance.
A demo shows a tool at its best; a month of real work shows whether your team will use it.
Trials on this list last 7 to 14 days, so start yours on day 8; if it ends before day 25, finish on the vendor’s monthly paid plan.
Example, for illustration only. A 14-person agency on published annual prices would pay $349.86 a month on Teamwork.com Accelerate, $350 on Productive Professional, $360 on PLYNTUM Scale and $966 on Rocketlane Premium. At 20 people the two per-user plans reach $499.80 and $500, while PLYNTUM Scale stays at $360. The cheapest option depends on headcount, so price the team you expect to have.
"},{"heading":"What PLYNTUM does not do","html":"If any of these is a requirement today, another tool on this list will serve you better.
Each vendor’s own pages, with the date we read them:
Prices change. Check the vendor’s page before you buy or quote a figure; if one here is out of date, write to us and we will re-read it.
"},{"heading":"Sources","html":"Every price was checked on the vendor’s own pricing page on the date shown next to it. If something has changed, tell us at info@plyntum.com and we will correct it.