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Comparison · Updated September 2026

Swift Fox vs Splynx

Splynx is a capable, well-priced billing and CRM platform for ISPs, with a very complete billing engine, a built-in RADIUS server, TR-069 and accounting add-ons, and customers running everything from fixed wireless to fibre and LTE. Swift Fox comes at the problem from the network side, as a monitoring and automation platform that grew billing tools rather than the reverse. This page lays out what that means in practice, including how the two work together, since Swift Fox syncs directly with Splynx. If we get a fact wrong, tell us and we'll fix it.

Choose Splynx if…

Your biggest needs are on the billing and CRM side and you want them at the lowest per-subscriber cost: RADIUS and PPPoE authentication, FUP and data caps, TR-069 CPE management, hotspot vouchers, accounting integrations, and provisioning for fibre or LTE alongside fixed wireless. Splynx does all of that in one system, with SNMP monitoring included.

Choose Swift Fox if…

You want the network layer: monitoring that reads signal and capacity from your radios, paging with on-call rotations, built-in QoE shaping, MPLS auto-balancing, DDoS protection, and CGNAT. Run it beside Splynx billing through the sync, or add our billing and hosted call centre on top if you'd rather have one vendor.

The core difference

Billing-first vs. network-first

Splynx started from billing. It's based in Prague, it's used by ISPs in a lot of countries, and its billing engine is very complete: recurring invoicing, a long list of payment gateways, a built-in RADIUS server for PPPoE and DHCP authentication, MikroTik API integration for speed limits, FUP and data-cap automation, hotspot vouchers, a customer portal with mobile apps, and add-ons for TR-069, Huawei GPON, and accounting packages like QuickBooks, Xero, NetSuite, and Zoho Books. It also includes network monitoring of the SNMP and ping variety, with graphs for any OID, SNMP traps, email and SMS alerts, a weathermap, and config backups.

Swift Fox started from the network side. It was built to run our own WISP: radio-level monitoring across every vendor, per-minute ping history on every customer radio, backhaul capacity measurement, MPLS traffic balancing, and fq_codel shaping. Billing, a customer portal, and a hosted call centre were added on top later, so a billing event can drive a network action without any glue between vendors (an unpaid invoice becomes a captive-portal disconnect, and a payment becomes a reconnect).

The practical split is that on billing depth and price, Splynx is ahead, and on the network, Swift Fox does a lot of things Splynx doesn't do at all: signal and MCS from the radios, live backhaul capacity, on-call paging, QoE shaping without a separate box, MPLS auto-balancing, DDoS blackholing, and CGNAT management. Splynx's own answer to QoE is a LibreQoS or Preseem integration, which means a second inline system to buy, size, and maintain.

Support is worth knowing about too. Splynx support is by ticket on Central European hours (Monday to Friday 04:00–22:00 CET, and 08:00–17:00 CET on weekends), which is mid-afternoon in North America on weekdays and mid-morning on weekends, and hands-on help beyond the included two hours is $70 an hour. Our support is direct, from an engineer who has run a WISP, and onboarding includes two hours with one of us.

Feature by feature

What each platform does

CapabilitySplynxSwift Fox
Recurring billing, invoicing & card processingYesmany payment gateway add-ons, customer portal and MyISP mobile appYes150+ merchant providers via Spreedly — card data is tokenized, so you can switch processors without re-collecting cards
RADIUS / PPPoE authentication, FUP & data capsYesbuilt-in RADIUS server, MikroTik API, hotspot vouchers—plan speeds are enforced directly on your MikroTik edge; no RADIUS server
TR-069 / ACS CPE managementAdd-on$100 / mo per 1,000 devices—
Accounting integrations (QuickBooks, Xero, NetSuite, Zoho Books)Yes, add-ons2 hours of paid setup at $70 / h; NetSuite and Zoho Books carry a $1,000 activation feeGAAP/IFRS reports and exportsno live accounting sync
Fibre / GPON & LTE provisioningYesHuawei OLT add-on, capped at $100 / mo—built for fixed wireless; fibre CPEs are monitored, not provisioned
Inventory, scheduling & ticketingYeswith a Scheduler mobile appLimitedticketing and scheduling with calendar sync and customer notifications; no inventory
Hosted PBX with call recording on accounts—Yes, optional tieryour toll-free number, minutes included
Customer self-service portalYesYesworks even while disconnected — pay to auto-reconnect
Network monitoringYesSNMP and ICMP, RRD graphs for any OID, SNMP traps, weathermap, config backup and rollbackYesevery customer radio pinged every minute with history forever, plus signal, MCS and live backhaul capacity from every major vendor, and config backup with diffs
On-call paging with rotations & time-of-day thresholdsEmail and SMS alertsYes
Delinquency automation (disconnect / redirect for nonpayment)Yesblocks via RADIUS or the MikroTik API and redirects to a blocked pageYesbranded captive portal; with the Splynx sync, disconnects and reconnects follow the customer's Splynx status
fq_codel QoE shaping to plan ratesVia add-onLibreQoS module or Preseem integration — a separate inline box you runBuilt inon your MikroTik edge or our inline Pathbox, plus tier-fair PFO shaping during congestion
Backhaul capacity measurement—Yessignal / MCS / throughput from every major vendor, plus automated speedtests between MikroTik routers
MPLS auto traffic balancing (RSVP-TE)—Yesunique to Swift Fox
DDoS detection & CGNAT management—Whalebone protective-DNS add-on for subscriber securityYes
SupportTickets, 7 days a week on Central European hoursMon–Fri 04:00–22:00 CET, weekends 08:00–17:00 CET; 2 hours of setup help included, then $70 / hDirect support from usanswered by an engineer with experience running WISP networks; 2 hours of free onboarding
Works with the other platformREST API and webhooksYes — Splynx syncread-only API key; tariffs, customers and services sync automatically every five minutes
PricingFrom $0.55 / active sub / modrops to $0.165 at 10,001+; 400-subscriber minimum licence (about $220 / mo); 10% off annualFrom $0.75 / sub / mo network tier$1.50 with billing; $50–100 minimums, no contract
Free trial15 days30 dayswith 2 hours of free onboarding

Splynx information sourced from splynx.com (pricing page, pricing policy, and documentation) as of September 2026. Splynx is a trademark of its respective owner; Swift Fox Systems is not affiliated with Splynx. If anything here is outdated or inaccurate, email us and we'll correct it promptly.

Running both

Keep Splynx and add the network layer

For most Splynx shops this is the setup we'd suggest. Splynx is inexpensive and does its job well, billing migrations are painful (we've done them), and everything Splynx is missing is on the network side. Swift Fox syncs with Splynx directly, so billing and CRM stay exactly where they are and the network layer goes in beside them.

How the Splynx sync works

1 · Connect

Create a read-only API key in Splynx with three view permissions (Tariff Plans › Internet, Customers › Customer, Customers › Customer Internet services) and paste it into Swift Fox. We poll it every five minutes and never write anything back.

2 · Map

Add your towers and backhauls to the Swift Fox network map. This is the one manual step, and onboarding covers it. Customer radios are matched to their Splynx service by MAC address automatically.

3 · Done

Every synced customer gets per-minute monitoring with paging, fq_codel shaping to the speeds on their Splynx tariff (with PFO fairness on saturated links), and captive-portal disconnects that follow their Splynx status. Block a customer in Splynx and they land on the portal within five minutes; reactivate them and they're back on.

Balances stay in Splynx. Customers pay through the Splynx portal the same as they do today, Splynx changes their status, and Swift Fox follows it. If you later decide to consolidate onto Swift Fox billing, you can do that on your own schedule, with our help.

At 1,000 subscribers, Splynx (about $550 / mo) plus the Swift Fox Network Management tier ($750 / mo) comes to roughly $1,300 / mo for billing, CRM, monitoring, paging, QoE shaping, MPLS balancing, DDoS protection and CGNAT. Splynx plus a Preseem appliance is about $1,450 / mo, and that covers shaping only.

Common questions

Frequently asked questions

We're on Splynx and happy with it. Why would we look at Swift Fox?
If Splynx covers everything you need, keep using it. Where Splynx shops usually come looking for something more is the network side: monitoring that reads signal and capacity from the radios rather than just ping and SNMP counters, paging with on-call rotations, QoE shaping that doesn't need a separate LibreQoS or Preseem box, MPLS traffic balancing, and DDoS protection. The usual advice is "keep Splynx and add a QoE appliance and a monitoring tool". Swift Fox is that network layer as one product, and it syncs with Splynx, so you don't have to give up the billing system you like to get it.
Does Splynx do network monitoring?
Yes. Splynx has SNMP and ICMP monitoring with RRD graphs for any OID your hardware exposes, SNMP traps, email and SMS alerts, a network weathermap, and config backup with rollback. It's a general-purpose SNMP monitor, and a fairly good one. The difference is what the monitoring is connected to. Swift Fox reads radio-level data (signal, MCS, live backhaul capacity) from every major wireless vendor, pages your on-call tech with time-of-day thresholds and rotations, and feeds the same data into automation: QoE shaping, tier-fair PFO during congestion, MPLS traffic rebalancing, and DDoS mitigation. Splynx will tell you a backhaul is degraded. Swift Fox will tell you too, and then move traffic off it.
What does the Splynx sync need from our side?
A read-only API key. In Splynx you create an API key under Administration → API keys and turn on three view permissions: Tariff Plans › Internet, Customers › Customer, and Customers › Customer Internet services. Nothing else, and no edit rights, so Swift Fox can never change anything in Splynx. Paste the key and secret into Swift Fox and we poll it every five minutes. Your tariffs, customers, and internet services come across automatically, and customer radios are matched to their Splynx service by MAC address (with the service IP as a fallback). The one manual step is adding your towers and backhauls to the Swift Fox network map, which our onboarding covers.
Does Swift Fox replace Splynx's RADIUS, TR-069, or accounting integrations?
No, and that's a big part of why we built the sync instead of trying to. Swift Fox has no RADIUS server, no ACS, and no live accounting sync. It enforces plan speeds directly on your MikroTik edge with fq_codel queues, and the sync reads the download and upload speeds from your Splynx tariffs so both systems agree on what each customer is paying for. If PPPoE authentication through RADIUS, TR-069 CPE management, or a QuickBooks or Xero feed are central to how you run things, keep Splynx doing them and let Swift Fox handle the network.
Is Swift Fox billing cheaper than Splynx?
No. Splynx starts at $0.55 per active subscriber, and our Network + Billing tier is $1.50, which includes the whole network layer. Compared purely on billing, Splynx is cheaper. If you're already on it, keeping it and adding our Network Management tier at $0.75 also works out cheaper than moving to Swift Fox billing, and that's the path we'd suggest to most Splynx shops. Some operators consolidate onto Swift Fox billing later, usually for the captive-portal reconnects, the call centre tier, or to have one vendor, and that can happen on your own schedule with our help.
Who builds Swift Fox?
Swift Fox grew out of a WISP we founded and ran in southern Alberta for ten years, with a few thousand subscribers on a mix of Ubiquiti, Cambium, Mimosa, and MikroTik gear. Every feature was built to solve a problem we hit on that network. When you book a demo or open a support ticket, you're talking to an engineer with real experience running a wireless ISP.

See it running next to Splynx, live

Book a 20-minute demo and we'll walk through the Splynx sync with your network in mind. No slide deck, just the product and an engineer who has run a WISP.

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