[en] We have performed partial-wave analyses of the K⁺K^os π^- system produced in the reactions K^-p → K⁺K^osπ^-, Λ/Σ, π^-p → K⁺K^os π^-n and bar pp → K⁺K^osπ^- X at 8 GeV/c in substantially the same apparatus. We present and compare the results of the analysis of the three reactions in the mass range 1.24 GeV/c² < M(KKπ) <1.56 GeV/c². In all three reactions the J^PG = O minus-plus, 1± and 1⁺⁺ waves are the most important. A strong f₁(1285) signal is evident in the π and bar p beam data sets but not in the K data. There is evidence of η(l280) production, especially in the n and 0 beam data. We find evidence of two O^minus-plus states in the 1400 MeV/c² mass region, but no compelling case for a 1⁺⁺ resonance in this region. Finally, the 1^± wave in the K beam data is consistent with an h' state below the K*K threshold