Diesel TMS

Diesel TMS combines trucking and freight brokerage operations in one transportation management system for owner-operators, small fleets, and growing brokerages. Its tools cover load management, dispatching, quoting, and rate confirmations, alongside an iOS driver app for assignments, tracking, status updates, geofenced updates, documents, scanning, and log book entries. Accounting includes double-entry bookkeeping with a general ledger, invoicing, payment receipt, carrier and vendor payments, and ACH file downloads. Integrations include two-way QuickBooks Online, 123Loadboard, MyCarrierPortal, email, and factoring services. Zapier works on every plan, including free, and is described as connecting the system to over 6,000 apps. The company says its API offers no-cost create, read, update, and delete access to core data. TMS Unlimited is free and includes unlimited users, loads, customers, carriers, trucks, drivers, and quotes. TMS Flex is priced on request, billed per user per hour while logged in; TMS Pro costs $40 a month per user. Paid plans include standard features, no ads, and dedicated support.

Diesel TMS brings dispatch, driver, and accounting functions together, with a free plan and paid options. Buyers should note the listed upload-size limit for Basic and compare the paid billing structures with their usage needs.

Diesel TMS suits owner-operators, small fleets, and growing brokerages managing freight and trucking workflows. Its driver app is for teams using iOS devices.

Diesel TMS suits owner-operators, small fleets, and growing brokerages that want dispatch, driver workflows, and accounting in one system. Its unusually open free-plan capacity is a strong starting point, while paid plans trade hourly usage or a fixed monthly fee for ad-free use and dedicated support.

Overview

Diesel TMS brings trucking and freight brokerage operations together, spanning load management through driver updates and accounting. That breadth is useful for operators seeking one system for core workflows; businesses that need a particular workflow should weigh the breadth against the specific capabilities they rely on.

The free TMS Unlimited plan allows unlimited users, loads, customers, carriers, trucks, drivers, and quotes, with no credit card required. Those caps make it possible to bring a sizable operation into the system without per-seat or per-load charges, although the plan includes standard features and ads.

The company says it uses multiple datacenters in multiple locations for redundancy and guarantees less than five minutes of downtime per month. That commitment may matter to operations that depend on continued access to dispatch and accounting.

Key features

Dispatch and driver workflows

Dispatchers can manage loads, dispatch, quote, and create rate confirmations. The iOS driver app supports assignment notifications, tracking, status updates, geofenced automatic updates, document access and scanning, and log book entries. This gives field drivers a defined way to receive work and send back updates and paperwork; the listed mobile availability is iOS, alongside web access.

Accounting and integrations

Accounting includes double-entry bookkeeping with a general ledger, invoicing, payment receipts, carrier and vendor payments, and ACH file downloads. That makes the system more than a dispatch tool for teams wanting payment workflows in the same product. QuickBooks Online two-way integration, 123Loadboard, MyCarrierPortal, email, and factoring integrations connect it with listed external services.

Zapier connects Diesel TMS to over 6,000 apps on every plan, including free. The company also says its API provides create, read, update, and delete access to core data at no cost, giving teams integration routes beyond the named services.

Configuration and access

A rate confirmation builder, customizable load list and interface, dark mode, logo upload, and white labeling provide ways to tailor the workspace and customer-facing materials. More than 500 permission settings and customer and carrier portals can help businesses separate access across roles and external partners, though operators should consider whether that configurability is worth managing.

Pricing

TMS Unlimited costs nothing. It includes unlimited users, loads, customers, carriers, trucks, drivers, and quotes, with no credit card required and standard features. It is the clearest fit for a business prioritizing capacity without a recurring plan charge; the trade-offs are ads and the absence of the paid plans' dedicated account representative and support.

TMS Flex is priced on request, billed per user, per hour, accruing only when logged in. It includes all standard features, no ads, dedicated account representative and support, and no minimum. This suits variable usage that benefits from avoiding a fixed monthly commitment, but the hourly per-user charges can be less predictable than a flat plan.

TMS Pro costs $40 a month, billed per user, per month. It includes all standard features, no ads, dedicated account representative and support, with a fixed monthly cost. It is better suited to regular users who value predictable billing; each user adds to the monthly total.

Basic has a 2 MB maximum file upload, while paid Flex and Pro plans allow 35 MB per file. Teams handling larger documents should account for that difference when choosing the free plan.

Platforms

Diesel TMS is available on iOS and the web. The iPhone and iPad app provides the listed driver tools, while web access supports the broader system.

Who it's for

Owner-operators can start with unlimited free-plan capacity, while small fleets and growing brokerages can draw on dispatch, driver, accounting, equipment management, and customer and carrier portals. Teams with variable login patterns may prefer Flex; those with steady usage may find Pro's fixed per-user monthly charge easier to budget. It is a weaker fit for teams requiring Android access or larger free-plan uploads.

Pros and cons

• Pros: Unlimited users, loads, and related capacity on the free plan removes common growth-based caps.
• Pros: Dispatch, driver updates, and double-entry accounting cover several central trucking and brokerage workflows in one system.
• Pros: Zapier works on the free plan, and the company says core-data API access is free.
• Cons: The free plan's 2 MB file limit may constrain document-heavy workflows.
• Cons: Flex billing varies with each user's logged-in hours, while Pro's cost scales with the number of users.
• Cons: The listed mobile platform is iOS, which rules out teams seeking an Android driver app.

Alternatives

For another trucking option, browse Trucking Software.

SmartHop offers free Growth and Starter plans, including a Growth plan for midsize companies with 10 MCs and a Starter plan for owner-operators looking to book loads; consider it if those plan descriptions align more closely with your operation.

Super Dispatch has a free Carrier TMS Lite plan with a driver app, limited Carrier TMS dashboard, and Super Loadboard, but no advanced reporting or automated invoicing; it is worth considering if that narrower free offering matches your needs.

Numeo offers a free Spot Free plan limited to one seat and one MC connection, as well as Spot Pro at $9.99 a month billed annually; it may suit a single-seat operation comfortable with that connection limit.

Axon Software is a paid alternative with a free trial.

DispatchTMS is a paid alternative.

Ditat uses custom pricing and offers a personalized demo; consider it if you prefer to discuss pricing and see a demo with sales.

Infinity Trucker is a paid alternative.

LoadMaster.app is a free alternative available on Android and iOS.

Verdict

Diesel TMS is a strong choice for owner-operators, small fleets, and growing brokerages that want dispatch, driver tools, and accounting together without free-plan user or load limits. Choose it especially if the free capacity or paid hourly option fits your usage; look elsewhere if you need Android mobile access or regularly handle files larger than the free plan's 2 MB limit.