# Slipway — a free industry planner: what to build, where to build it, where to sell it **URL:** \ **Category:** Third Party Developers\ **Created:** [August 22, 2026, 10:30pm UTC](https://forums.eveonline.com/t/slipway-a-free-industry-planner-what-to-build-where-to-build-it-where-to-sell-it/516921 "2026-08-22T22:30:41Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![Karmikl](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/karmikl/32/508632_2.png) [@Karmikl](https://forums.eveonline.com/u/Karmikl)\ **Post date:** [August 22, 2026, 10:30pm UTC](https://forums.eveonline.com/t/slipway-a-free-industry-planner-what-to-build-where-to-build-it-where-to-sell-it/516921/1 "2026-08-22T22:30:41Z")
Hello fellow capsuleers, I’ve built **Slipway** , a free industry planner. No sign-in needed to use it, no subscription, ever. > **[Slipway — EVE Online industry planner](https://slipway.karmikl.space)** > > Find what to build, check the market can absorb it, and price it across every hub — including structure markets no public browser can see. Now with hauling routes. It answers one question: **what should I build, where should I build it, and where should I sell it?** Pick a hub, get every T1 and T2 line ranked by what it actually earns — not just the headline ISK/hour, but after the job fee in a real system, the materials where _you_ buy them, and the sale where _you_ sell them. **What it does** ✅ Ranks every manufacturing line, invention line and reaction formula in the game ✅ Buy hub, build system and sell region are three separate choices — because the right hub to build in is often not the one with the best sell price ✅ Caps every line by real traded volume, so it won’t tell you a thing that sells 3 a week earns 5b/hour ✅ Models your engineering complex: each rig applies to what CCP says it applies to, scaled by the security of your system ✅ **Plan** — give it capital, slots and a horizon, get a build queue and a shopping list ✅ **Trade** — what’s worth hauling between two markets, ranked by profit per m³, and it’ll fill a hold for you ✅ Market browser across every tracked region and structure ![manufacture](https://global.discourse-cdn.com/eveonline/original/4X/f/7/6/f76d0108f242b6313b1f394c242b7a6fb27f7634.png) **Sign in with EVE (optional)** and it gets personal: ✅ Uses your blueprints’ real ME/TE, your skills and your hangars ✅ **Stock** — what you can finish _right now_ without buying anything ✅ **Jobs** — every industry job across all your characters and your corporation in one list, with local completion times, and it feeds your free slots back into Plan ✅ Reads the order books of player structures you can dock at, which no public price site can see Sign-in is read-only and opt-in by tier: the default login never asks for corporation anything. What each permission reads, and how to delete it all, is on the privacy page. **Why I made it:** Vorton Tuning System II is worth 214m built in Jita and 126m in Amarr — even though Amarr has the better sell price _and_ half the job fee — because the hull costs 1.59× more there. No single number tells you where to build. I wanted the tool that does the whole sum. It’s new, and some of you run industry at a scale I don’t. If a number looks wrong, I’d rather hear it than have it sit there: • Item • Hub / system • What seems off Every formula and assumption is written up at [How Slipway costs a build — the formulas, the data, and what is assumed](https://slipway.karmikl.space/how-it-works) — including what’s estimated rather than measured. Fly safe o7 Karmikl _Not affiliated with or endorsed by CCP / Fenris Creations._ ---
**Author:** ![Namdor](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/namdor/32/396179_2.png) [@Namdor](https://forums.eveonline.com/u/Namdor)\ **Post date:** [August 23, 2026, 12:39am UTC](https://forums.eveonline.com/t/slipway-a-free-industry-planner-what-to-build-where-to-build-it-where-to-sell-it/516921/2 "2026-08-23T00:39:32Z")
Man the AI even named it, huh? ---
**Author:** ![Nozomi\_Laaksonen](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/nozomi_laaksonen/32/509780_2.png) [@Nozomi\_Laaksonen](https://forums.eveonline.com/u/Nozomi_Laaksonen)\ **Post date:** [September 2, 2026, 4:17am UTC](https://forums.eveonline.com/t/slipway-a-free-industry-planner-what-to-build-where-to-build-it-where-to-sell-it/516921/3 "2026-09-02T04:17:50Z")
why hate?ai hate seems so forced ---
**Author:** ![Namdor](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/namdor/32/396179_2.png) [@Namdor](https://forums.eveonline.com/u/Namdor)\ **Post date:** [September 2, 2026, 10:32pm UTC](https://forums.eveonline.com/t/slipway-a-free-industry-planner-what-to-build-where-to-build-it-where-to-sell-it/516921/4 "2026-09-02T22:32:28Z")
I use AI quite a lot, and what I’m criticizing here isn’t the AI, but rather its unskilled, uncritical, and most of all _lazy_ utilization. I’ve heard software developers complain that, of late, they just do QC for the AI, but uh… You can’t just _skip_ the QC part, which is clearly what OP has done here. ![image](https://global.discourse-cdn.com/eveonline/original/4X/a/d/4/ad4bd4b15f5b00f43f3230f925807aedbaada125.png) ![image](https://global.discourse-cdn.com/eveonline/original/4X/9/1/f/91f564c906d00af18e655813b58d3b970116b829.jpeg) It’s only wrong by _about_ 20%, so I can see how it could be easily overlooked by a blind person who also never checked the output even a single time. Doing a little bit of napkin math here, it looks like this is probably calculating it as: JobFee = EIV \* SCI \* (1+surchage+tax) For an MTU in Jita that’s: 5177367 \* .1707 \* 1.0425 = 921,337 The correct calculation is actually: EIV \* SCI + EIV \* (surchage+tax): 5177367 \* .1707 + 5177367 \* .0425 = 1,103,814 Now, this is an easily fixed bug, but it’s also an extremely obvious one that anyone would catch either at a glance, if they’re very familiar with prices, or during even the most casual of testing. OP did not even queue a job to see if the values his calculator outputs matches the ingame values, he just called it good enough, slapped a Ko-Fi donation button on it, and shipped it. I would go on, but I am pretty sure that I have already given this app more _human_ mindshare than anyone else on the planet. ---
**Author:** ![Karmikl](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/karmikl/32/508632_2.png) [@Karmikl](https://forums.eveonline.com/u/Karmikl)\ **Post date:** [September 3, 2026, 3:08am UTC](https://forums.eveonline.com/t/slipway-a-free-industry-planner-what-to-build-where-to-build-it-where-to-sell-it/516921/5 "2026-09-03T03:08:49Z")
You’re right. Slipway was calculating the job fee incorrectly by applying the surcharge and tax to the SCI-adjusted value instead of applying them directly to EIV. I’ve corrected the formula, verified the MTU example against the in-game job quote, and added a regression check so this calculation cannot quietly return. I’ve also credited Namdor on the site, with a link to his forum profile, for identifying the issue and providing a reproducible example. This was a basic error that I should have caught before release. I’m now reviewing the rest of Slipway’s calculations against CCP documentation and data, the EVE University Wiki, and actual in-game results. Thank you for calling it out. If anyone else finds something that looks wrong, please let me know—specific examples like this are especially helpful. ---
**Author:** ![Namdor](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/namdor/32/396179_2.png) [@Namdor](https://forums.eveonline.com/u/Namdor)\ **Post date:** [September 4, 2026, 12:04am UTC](https://forums.eveonline.com/t/slipway-a-free-industry-planner-what-to-build-where-to-build-it-where-to-sell-it/516921/6 "2026-09-04T00:04:03Z")
> [@Karmikl](#): > > I’ve corrected the formula, verified the MTU example against the in-game job quote, and added a regression check so this calculation cannot quietly return. I mean. You probably pasted my comment into Claude Code or Codex, it did a bunch of thinking, read a bunch of unrelated files that have nothing to do with the price of tea in china, eventually said “Bug found… just a one liner, fixing now…” and then it went ahead and added the regression check on its own even though this isn’t a class of bug for which that makes sense because it’s a one line formula that exists in one place and never needs to be touched outside of the pricing formula changing. ---
**Author:** ![Karmikl](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/karmikl/32/508632_2.png) [@Karmikl](https://forums.eveonline.com/u/Karmikl)\ **Post date:** [September 4, 2026, 4:37pm UTC](https://forums.eveonline.com/t/slipway-a-free-industry-planner-what-to-build-where-to-build-it-where-to-sell-it/516921/7 "2026-09-04T16:37:59Z")
Honestly, that’s not far off from how it went. What your math didn’t show was the scope: the same faulty fee logic was in eleven places across the codebase, and Jita was the mild case — in a quiet system it understated fees about 5×, and on invention’s thin index about 30×. Your comment kicked off a broader audit against CCP’s published formula, the SDE, public references, and recorded in-game quotes. That turned up more issues: reaction-fee composition, invention EIV basis, copying-material scaling by licensed runs, skill eligibility, rounding, research limits. What’s confirmed against in-game quotes is fixed; what isn’t validated yet is marked pending in the app. I kept the regression checks because they don’t ask the code to agree with itself — they pin independently calculated totals from actual in-game quotes, yours included, so a future “fix” can’t quietly bring any of it back. Sharp delivery, but the app is substantially better because you raised it. Your point plus a bunch more are fixed and live. ---
**Author:** ![Karmikl](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/karmikl/32/508632_2.png) [@Karmikl](https://forums.eveonline.com/u/Karmikl)\ **Post date:** [September 30, 2026, 5:19pm UTC](https://forums.eveonline.com/t/slipway-a-free-industry-planner-what-to-build-where-to-build-it-where-to-sell-it/516921/9 "2026-09-30T17:19:09Z")
Quick Slipway update for anyone running industry across multiple characters. I mentioned the **Jobs** view in the original post, but probably undersold it. After linking your industry characters through EVE SSO, Slipway puts their personal and corporation jobs into one list—no switching characters or checking installations separately. Because it’s web-based, I don’t need to install an app—or keep multiple apps updated across my various devices. I just open Slipway wherever I am, and everything is in one place. For each job, it shows the activity, blueprint, product, runs, installer, location, fee, and completion time in your local timezone. You can filter by character, corporation, or jobs that are ready for delivery. Those active jobs also feed back into **Plan**. Slipway subtracts occupied slots from each character’s trained manufacturing, reaction, and science capacity before building the next queue, so the plan is based on the slots you actually have available. It also combines that with: - Your blueprints and their real ME/TE - Materials across your personal and corporation hangars - **Stock** , showing what you can build immediately without buying anything - A combined shopping list for what remains - Player-structure markets your authorized characters can access Sign-in is optional and read-only. The public manufacturing, invention, reaction, market, trade, and reprocessing tools still work without an account. > **[Slipway — Free EVE Online Industry Planner](https://slipway.karmikl.space/)** > > What to build, where to build it, where to sell it. Every T1/T2 line ranked by real profit and capped by what the market absorbs · Plan a queue and shopping list · Stock: what you can finish now · Jobs across all your characters · Trade routes by... If you run industry across several characters, I’d be interested to hear what information you still have to leave Slipway to find. Fly safe o7 Karmikl