The short answer
For an importer or small forwarder who tracks ocean plus some air, LTL or parcel, a flat monthly plan that covers every mode and publishes its allowance is the safest starting point. For ocean only teams, Terminal49 has a free tier. For developers, Vizion is API first. For occasional lookups, Shipsgo sells prepaid credits. We build ShipmentVisibility, so read our row as a vendor row and check the others yourself.
If you only follow containers and want a shorter list, see best container tracking software for small importers. This page goes deeper on data sources, ETA quality and how to test a tool before paying.
Where the tracking data comes from
Ocean tracking tools do not all read the same sources, and the source decides how fast an event shows up and how often it is wrong. There are four common feeds.
Carrier websites and APIs. Most lines publish container status and vessel schedules. This is the base layer and it is where most tools start.
Terminal data. Gate out, discharge and holds come from the port terminal, often earlier than the line posts them. Tools that read terminal events help most with free days.
Vessel position (AIS). Ship location data lets a tool estimate arrival from actual speed and distance instead of the published schedule. The International Maritime Organization explains AIS vessel tracking and why it is broadcast.
Your own inputs. A booking number, bill of lading or container number you paste in. The more identifiers you can supply, the fewer lines a tool fails to match.
A tool that only reads carrier sites can lag a terminal discharge by hours. A tool that blends feeds is usually faster, but ask the vendor which feeds it uses per line, because coverage differs by carrier and region.
A 14 day trial test that exposes weak tools
Do not judge a tool on its demo containers. Run the same short test on two vendors.
| Check | How to run it | What a good result looks like |
|---|---|---|
| Carrier match | Load 10 containers across at least 4 lines you really use | All 10 resolve to the right line without manual fixes |
| ETA change speed | Note the line's posted ETA for 5 boxes on day 1 and day 7 | The tool shows the same change within a few hours of the line |
| Discharge timing | Compare the tool's discharge time with the terminal or your trucker | Within the same day, with a clear event name |
| Alert routing | Send alerts to the person who books drayage | Email, Slack or webhook arrive without a shared inbox |
| Other modes | Add one air waybill and one LTL PRO | Same list, no second login |
Write the results down. A tool that matches 10 of 10 and reflects ETA changes the same day is better than one with a longer feature list. Demurrage rules also differ by line, so read the line's tariff, and our note on demurrage and detention.
Ocean freight tracking software compared
| Tool | Modes | Pricing model | Best for |
|---|---|---|---|
| Terminal49 | Ocean only | Free up to 10 active containers and 3 users, larger plans quoted by sales on annual contracts | Ocean-only importers who want terminal data and an API |
| Shipsgo | Ocean and air | Prepaid credits, confirm current rates | Occasional lookups and small forwarders |
| Vizion | Ocean, API first | Confirm on vendor site | Developers building container features |
| project44 or FourKites | All modes | Quote-based annual contracts | Large shippers with integration teams |
| ShipmentVisibility | Ocean, air, LTL, FTL, parcel | $49, $149, $499, $1,499 a month with 10 to 400 containers, no contract | Importers and forwarders with mixed freight and a fixed budget |
Cells that say confirm are figures we could not verify publicly. Terminal49 details come from its pricing page. For head to head reads see Terminal49 alternatives, Shipsgo alternatives and, if you also move freight for clients, freight forwarder tracking software.
Worked example of a rolled booking
A rolled booking happens when the line moves your container to a later sailing. Say you import 40 containers a month and 2 of them roll by 7 days. The factory shipped on time, so the first sign is usually a vague note from the forwarder, days later. Meanwhile the warehouse has booked labor and the trucker is scheduled for a box that is not coming.
Put numbers on it. If each rolled box costs a missed delivery slot (say $250 in rebooking and idle labor) and a customer order slips a week, 2 boxes cost about $500 in direct charges before any lost sale. A tool that shows the new ETA the day the line posts it lets you rebook drayage and warn the customer the same day. That is an illustration with assumed figures, so swap in your own labor and slot costs. A $149 plan with 40 containers costs less than that single month.
Importers with bank-fed accounting often match carrier and terminal invoices at month end. A tool such as Reconciles can help match those payments to bank lines once the shipments are tracked.
FAQ
What is ocean freight tracking software?
It is software that follows containers and bookings from origin port to discharge using carrier, terminal and port data, then shows milestones and an ETA. Good tools alert you to vessel delays, rolled bookings and discharge so you can plan trucking and avoid demurrage.
How accurate is the ETA in ocean freight tracking software?
ETAs come from the carrier schedule, vessel position and port congestion models, so they move. Treat the ETA as a planning signal and judge a tool by how early it reflects a change. Test it on your own containers for two weeks and compare against what the line reported.
Do I need ocean freight tracking if my forwarder tracks it for me?
You still benefit. Forwarders update you when they update you. Your own tracking shows ETA changes and discharge as they are reported, and lets you check the forwarder's status. It matters most when the forwarder holds the booking and you hold the trucking and the warehouse.
How much does ocean freight tracking software cost?
Models vary. Terminal49 has a free tier up to 10 active containers and quotes larger plans. Shipsgo uses prepaid credits. ShipmentVisibility publishes flat plans at $49, $149, $499 and $1,499 a month with 10 to 400 containers. Confirm vendor prices before you buy.